* On August 14, 2018, the court forwarded a sealed copy of this Memorandum Opinion And Order 

to the parties to note any citation or editorial errors that required correction by August 17, 2018 at 

2:00 p.m. (EDT). The parties did not propose any corrections.

In the United States Court of Federal Claims

No. 16-1647

Filed: August 17, 2018

PUBLIC VERSION*

****************************************

*

*

MYNETTE TECHNOLOGIES, INC., and *

STEVEN M. COLBY, *

*

Plaintiffs, *

*

v. *

*

THE UNITED STATES, *

*

Defendant, *

*

and *

*

UNISYS CORPORATION *

*

Intervenor-Defendant. *

*

*

****************************************

Robert J. Yorio, Carr & Ferrell LLP, Menlo Park, California, Counsel for Plaintiffs. 

Michel Elias Souaya, United States Department of Justice, Civil Division, Washington, D.C., 

Counsel for the Government. 

Goutam Patnaik, Pepper Hamilton LLP, Washington, D.C., Counsel for Intervenor-Defendant. 

MEMORANDUM OPINION AND ORDER CONSTRUING CERTAIN CLAIMS OF 

UNITED STATES PATENT NOs. 7,719,425; 7,924,156; 9,524,458; AND 9,569,777 

BRADEN, Senior Judge.

28 U.S.C. § 1498(a) (Patent Infringement 

Jurisdiction); 

35 U.S.C. §§ 100(d) (Definitions), 112 

(Specification), 281 (Remedy for 

Infringement of a Patent);

37 C.F.R. § 1.75 (Claims); 

Claim Construction; 

Extrinsic Evidence; 

Intrinsic Evidence; 

Manual Of Patent Examining Procedure

§§ 2159 (Applicability Date 

Provisions), 2181 (Identifying and 

Interpreting Means-Plus-Function 

Limitations); 

Rules of the United States Court of 

Federal Claims 12(b)(1) 

(Jurisdiction), 12(b)(6) (Failure to 

State a Claim), 12(e) (Motion for a 

More Definite Statement), 14(b) 

(Notice to an Interested Party), 

15(a)(2) (Amendments Before Trial). 
2

To facilitate review of this Memorandum Opinion And Order, the court has provided the 

following outline. 

I. RELEVANT FACTUAL BACKGROUND.

II. PROCEDURAL HISTORY.

III. DISCUSSION.

A. Jurisdiction.

B. Standing.

C. Controlling Precedent Concerning Construction Of Patent Claims.

1. The Person Of Ordinary Skill In The Art.

2. Federal Trial Judges Should First Examine Intrinsic Evidence.

a. The Claims.

b. The Specification.

c. The Prosecution History.

3. Federal Trial Judges May Examine Extrinsic Evidence, But Only In 

Limited Circumstances.

IV. THE COURT’S CONSTRUCTION OF CERTAIN PATENT CLAIMS TERMS 

REQUESTED BY THE PARTIES.

A. Construction Of The Disputed Claim Terms.

1. “ON/OFF State.”

a. Plaintiff’s Opening Brief.

b. Defendants’ Opening Brief.

c. Plaintiff’s Response.

d. Defendants’ Response.

e. The Court’s Resolution.

2. “Responsive State.”

a. Plaintiff’s Opening Brief.

b. Defendants’ Opening Brief.

c. Plaintiff’s Response.

d. Defendants’ Response.

e. The Court’s Resolution.

3. “Shield” and “Shielding.”

a. Plaintiff’s Opening Brief.

b. Defendants’ Opening Brief.

c. Plaintiff’s Response.

d. Defendants’ Response.

e. The Court’s Resolution.
3

4. “Switch Logic.”

a. Plaintiff’s Opening Brief.

b. Defendants’ Opening Brief.

c. Plaintiff’s Response.

d. Defendants’ Response.

e. The Court’s Resolution.

i. 35 U.S.C. § 112, ¶ 6 Does Not Apply To The Term 

“Switch Logic.”

ii. The Proper Construction Of The Term “Switch Logic.”

V. CONCLUSION.
4

I. RELEVANT FACTUAL BACKGROUND.

1

 

On February 7, 2006, Steven M. Colby filed Patent Application No. 11/350,309 (the “‘309 

Application”) with the United States Patent and Trademark Office (“USPTO”). 3/30/18 Am. 

Compl. Ex. B. 

On July 19, 2006, Mr. Colby filed a related Patent Application No. 11/458,620 (the “‘620 

Application”) with the USPTO. 3/30/18 Am. Compl. Ex. A. 

On May 18, 2010, the USPTO issued the ‘309 Application, as U.S. Patent No. 7,719,425 

(the “‘425 Patent”), entitled “Radio Frequency Shielding.” 3/30/18 Am. Compl. ¶ 5; 3/30/18 Am. 

Compl. Ex. B. The USPTO listed Mr. Colby as the sole inventor of the ‘425 Patent. 3/30/18 Am. 

Compl. Ex. B. 

On April 12, 2011, the USPTO issued the ‘620 Application, as U.S. Patent No. 7,924,156 

(the “‘156 Patent”), entitled “Electronically Switchable RFID Tags.” 3/30/18 Am. Compl. ¶ 5; 

3/30/18 Am. Compl. Ex. A. The USPTO listed Mr. Colby as the sole inventor of the ‘156 Patent. 

3/30/18 Am. Compl. Ex. A. 

On March 17, 2015, Mr. Colby filed Patent Application No. 14/660,825 (the “‘825 

Application”), with the USPTO. 3/30/18 Am. Compl. Ex. D. On that same day, Mr. Colby filed 

a related Patent Application No. 14/660,907 (the “‘907 Application”) with the USPTO. 3/30/18 

Am. Compl. Ex. C. 

On September 26, 2016, Mr. Colby assigned “all rights, title[,] and interest” in the 

aforementioned patents and patent applications to Mynette Technologies, Inc. (“Mynette”).2 

3/30/18 Am. Compl. ¶ 6; see also “Assignment” dated September 26, 2016, within the “Image File 

Wrapper” of the ‘825 Application, UNITED STATES PATENT AND TRADEMARK OFFICE: PATENT 

APPLICATION INFORMATION RETRIEVAL, https://portal.uspto.gov/pair/PublicPair (select 

“Application Number” and search “14/660,825”; then select “Image File Wrapper”; then select 

“Assignee showing of ownership per 37 CFR 3.73”) [hereinafter “Mynette Assignment, USPTO

PUBLIC PAIR”].

3

 

 

1 The facts herein were derived from the March 30, 2018 Second Amended Complaint 

(“3/30/18 Am. Compl.”) and attached exhibits (“3/30/18 Am. Compl. Ex. A–D”). 

2 Mr. Colby is “an officer, director[,] and shareholder of Mynette[.]” 3/30/18 Am. 

Compl. ¶ 7. 

3 Mr. Colby executed two separate assignments. On September 25, 2016, Mr. Colby 

assigned “the entire right, title[,] and interest” in the ‘156 and ‘425 Patents and the ‘825 and ‘907 

Applications to the “Steven M. Colby Trust.” Mynette Assignment, USPTO PUBLIC PAIR. On 

September 26, 2016, Mr. Colby assigned the “the entire right, title[,] and interest” in the ‘156 and

‘425 Patents and the ‘825 and ‘907 Applications from the “Steven M. Colby Trust” to Mynette. 

Mynette Assignment, USPTO PUBLIC PAIR. 
5

On December 20, 2016, the USPTO issued the ‘907 Application, as U.S. Patent No. 

9,524,458 (the “‘458 Patent”), entitled “Switchable ePassport Including Shielding.” 3/30/18 Am. 

Compl. ¶ 5; 3/30/18 Am. Compl. Ex. C. The USPTO listed Mr. Colby as the sole inventor of the 

‘458 Patent and Mynette as the sole assignee. 3/30/18 Am. Compl. Ex. C. 

On February 14, 2017, the USPTO issued the ‘825 Application, as U.S. Patent No. 

9,569,777 (the “‘777 Patent”), entitled “ePassport Including Shielding Method.” 3/30/18 Am. 

Compl. ¶ 5; 3/30/18 Am. Compl. Ex. D. The USPTO listed Mr. Colby as the sole inventor of the 

‘458 Patent and Mynette as the sole assignee. 3/30/18 Am. Compl. Ex. D. 

II. PROCEDURAL HISTORY. 

On December 14, 2016, Mynette and Mr. Colby (collectively “Plaintiffs”) filed a 

Complaint in the United States Court of Federal Claims. ECF No. 1. On December 20, 2016, the 

USPTO issued the ‘458 Patent. 3/30/18 Am. Compl. ¶ 5; 3/30/18 Am. Compl. Ex. C. 

On February 13, 2017, the Government filed an Answer. ECF No. 7. On February 14, 

2017, the USPTO issued the ‘777 Patent. 3/30/18 Am. Compl. ¶ 5; 3/30/18 Am. Compl. Ex. D. 

On March 30, 2017, Plaintiffs filed an Unopposed Motion To Amend Complaint, pursuant 

to Rule of the United States Court of Federal Claims (“RCFC”) 15(a)(2), that requested leave to 

file an amended complaint “to add” the ‘458 and ‘777 Patents. ECF No. 9. On that same day, the 

court issued an Order granting Plaintiff’s March 30, 2017 Motion To Amend. ECF No. 10. 

On March 31, 2017, Plaintiffs filed an Amended Complaint. ECF No. 12. 

On May 31, 2017, the Government filed an Answer. ECF No. 14. On that same day, the 

Government filed an Unopposed Motion To Notify Third Parties, pursuant to RCFC 14(b), 

wherein the Government requested that notice be sent to: Gemalto North America (“Gemalto”); 

Infineon Technologies North America (“Infineon”); MorphoTrust USA, LLC (“MorphoTrust”); 

Unisys Corp. (“Unisys”); V3 Gate Team LLP (“V3”); and Wildflower International, LTD 

(“Wildflower”). ECF No. 15. 

On July 5, 2017, the court issued an Order granting the Government’s May 31, 2017 

Unopposed Motion To Notify Third Parties. ECF No. 17. On that same day, the Clerk of Court 

sent Notices to Gemalto, Infineon, MorphoTrust, Unisys, V3, and Wildflower. ECF No. 19. 

On August 1, 2017, the court issued a Scheduling Order entering a Claim Construction 

schedule. ECF No. 21. On August 22, 2017, Unisys filed a Motion To Intervene, pursuant to 

RCFC 24(a)(2). ECF No. 24. On August 23, 2017, the court issued an Order granting Unisys’s 

August 22, 2017 Motion To Intervene. ECF No. 26. 

On September 20, 2017, Unisys filed an Unopposed Motion To Extend requesting a thirtysix (36) day extension of time. ECF No. 32. On that same day, Unisys also filed a Motion To 

Dismiss, pursuant to RCFC 12(b)(6), or in the alternative, a Motion For A More Definite 

Statement, pursuant to RCFC 12(e). ECF No. 33. On September 21, 2017, the court issued an 

Order granting Unisys’s September 20, 2017 Motion To Extend and entering an amended Claim 

Construction schedule. ECF No. 34. 
6

On October 18, 2017, Plaintiffs filed a Response to Unisys’s September 20, 2017 Motion 

To Dismiss, or in the alternative, Motion For A More Definite Statement. ECF No. 35. 

On November 1, 2017, Unisys filed a Reply to Plaintiffs’ October 18, 2017 Response. ECF 

No. 37. On November 2, 2017, the parties exchanged proposed Claim Construction Charts. ECF 

No. 45 at 2. On November 9, 2017, the parties filed a Joint Claim Construction Statement And 

Chart. ECF No. 38. On November 17, 2017, the parties filed a Joint Motion To Amend The 

Schedule requesting the court to amend the Claim Construction schedule entered on September 

21, 2017. ECF No. 40. On November 20, 2017, the court issued an Order granting the parties 

November 17, 2017 Joint Motion. On November 21, 2017, Unisys filed a Motion To Submit 

Supplemental Briefing requesting leave to submit supplemental briefing, “because, after briefing 

on Unisys’s Motion was complete, . . . Plaintiffs . . . attempted to add additional asserted claims 

and . . . attempted to define ‘passport’ in a way that further supports Unisys’s arguments[.]” ECF 

No. 42 at 1. On November 27, 2017, the court issued an Order granting Unisys’s November 21, 

2017 Motion To Submit Supplemental Briefing and directing Plaintiffs to “file responses to any 

supplemental briefing on, or by, December 15, 2017.” ECF No. 43. On November 28, 2017, 

Unisys filed a Supplemental Memorandum. ECF No. 44. On November 30, 2017, the parties 

exchanged amended proposed Claim Construction Charts. ECF No. 45 at 3. 

On December 14, 2017, the Government and Unisys filed a Motion To Exclude, that 

requested the court to “preclude Plaintiffs from relying on the broadening modifications and added 

evidentiary support . . . included in [Plaintiffs’] November 30[, 2017 proposed Claim Construction] 

Chart.” ECF No. 45 at 7. On December 15, 2017, Plaintiffs filed a Supplemental Memorandum. 

ECF No. 46. On December 18, 2017, the parties filed an Amended Joint Claim Construction 

Statement And Chart.4 ECF No. 47. 

On January 4, 2018, Plaintiffs filed a Response to Defendants’ December 14, 2017 Motion 

To Exclude. ECF No. 49. On January 11, 2018, Defendants filed a Reply. ECF No. 50. 

On February 8, 2018, the court convened a Claim Construction Hearing. ECF No. 54 (“TR

1–145”). On February 22, 2018, the court issued an Order denying Unisys’s September 20, 2017 

Motion To Dismiss, or in the alternative, Motion For A More Definite Statement and denying 

Defendants’ December 14, 2017 Motion To Exclude. ECF No. 55. 

On March 16, 2018, the parties filed a Second Amended Joint Claim Construction 

Statement And Chart.5 ECF No. 58–1. On March 30, 2018, Plaintiffs filed a Second Amended 

 

4 The December 18, 2017 Amended Joint Claim Construction Chart identified two 

“UNDISPUTED TERMS”—(1) “fibers” and (2) “passport”—and eleven “DISPUTED 

TERMS”—(1) “key memory;” (2) “normally OFF;” (3) “ON/OFF state;” (4) “response;” 

(5) “responsive;” (6) “responsive state;” (7) “RFID tag;” (8) “shield;” (9) “state memory;” 

(10) “switch;” and (11) “switch logic.” ECF No. 47-1. 

5 The March 16, 2018 Second Amended Joint Claim Construction Chart identified eight 

“UNDISPUTED TERMS”—(1) “fibers;” (2) “key memory;” (3) “passport;” (4) “response;” 

(5) “responsive;” (6) “RFID tag;” (7) “state memory;” and (8) “switch”—and five “DISPUTED 
7

Complaint, pursuant to RCFC 15(a)(2).

6

 ECF No. 61 (“3/30/18 Am. Compl.”). The March 30, 

2018 Second Amended Complaint alleges that the “United States, acting through the [United 

States] Department of State, the United States Passport Office[,] and the [United States] 

Department of Homeland Security has been, and now is, using or manufacturing, without license 

from Mynette or [Mr.] Colby or lawful right to use or manufacture, the inventions described in 

and covered by” the ‘156, ‘425, ‘458, and ‘777 Patents. 3/30/18 Am. Compl. ¶¶ 19, 30, 39, 48. 

On April 13, 2018, Unisys filed an Answer. ECF No. 62. On April 25, 2018, Plaintiffs 

filed an Opening Claim Construction Brief. ECF No. 63 (“4/25/18 Pl. Br.”). On that same day, 

Defendants also filed an Opening Claim Construction Brief. ECF No. 64 (“4/25/18 Govt. Br.”). 

On May 11, 2018, Plaintiffs filed a Responsive Claim Construction Brief. ECF No. 65

(“5/11/18 Pl. Resp.”). On that same day, Defendants also filed a Responsive Claim Construction 

Brief. ECF No. 66 (“5/11/18 Govt. Resp.”). 

III. DISCUSSION. 

A. Jurisdiction.

The United States Court of Federal Claims has jurisdiction to adjudicate claims alleging

that “an invention described in and covered by a patent of the United States is used or manufactured 

by or for the United States without license of the owner thereof or lawful right to use or 

manufacture the same . . . [seeking] recovery of . . . reasonable and entire compensation for such 

use and manufacture.” 28 U.S.C. § 1498(a). 

The March 30, 2018 Second Amended Complaint alleges that the “United States, acting 

through the [United States] Department of State, the United States Passport Office[,] and the 

[United States] Department of Homeland Security has been, and now is, using or manufacturing, 

without license from Mynette or [Mr.] Colby or lawful right to use or manufacture, the inventions 

described in and covered by” the ‘156, ‘425, ‘458, and ‘777 Patents. 3/30/18 Am. Compl. ¶¶ 19, 

30, 39, 48. Therefore, the court has determined that the March 30, 2018 Second Amended 

Complaint properly invokes the court’s jurisdiction, pursuant to 28 U.S.C. § 1498(a), authorizing 

the United States Court of Federal Claims to adjudicate claims of patent infringement against the 

federal government. 

B. Standing.

“[S]tanding is a threshold jurisdictional issue.” Myers Investigative & Sec. Servs., 

Inc. v. United States, 275 F.3d 1366, 1369 (Fed. Cir. 2002) (citation omitted). The party invoking 

federal jurisdiction bears the burden of establishing standing. See Spokeo, Inc. v. Robins, 136 S.

Ct. 1540, 1547 (2016) (“The plaintiff, as the party invoking federal jurisdiction, bears the burden 

 

TERMS”—(1) “ON/OFF state;” (2) “responsive state;” (3) “shield;” (4) “shielding;” and 

(5) “switch logic.” ECF No. 58–1 Exs. A–B. 

6 During the February 8, 2018 Claim Construction Hearing, the court granted Plaintiffs 

leave to file an amended complaint. ECF No. 54 (“TR 140–41”). 
8

of establishing the[] elements [of standing].”); see also Myers Investigative & Sec. Servs., Inc., 

275 F.3d at 1369 (quoting Lujan v. Defs. of Wildlife, 504 U.S. 555, 561 (1992) (same)). To meet 

this burden at the pleading stage, the complaint must clearly and specifically set forth facts 

sufficient to satisfy the standing requirements. See Spokeo, Inc., 136 S. Ct. at 1547 (“Where, as 

here, a case is at the pleading stage, the plaintiff must ‘clearly . . . allege facts demonstrating’ each 

element.”) (citation omitted); see also McKinney v. U.S. Dep’t of Treasury, 799 F.2d 1544, 1557 

(Fed. Cir. 1986) (“The facts alleged in the complaint, taken as true for purposes of a standing 

analysis, must be sufficient to show that a party has suffered, or is likely to suffer, an injury in 

fact.”); 15-101 MARTIN H. REDISH, MOORE’S FEDERAL PRACTICE § 101.31 (2018), LEXIS (“To

meet its burden at the pleading stage, the litigant invoking federal jurisdiction must clearly and 

specifically set forth facts sufficient to satisfy the standing requirement.”). 

The standing requirements of Article III of the United States Constitution are applicable to 

the United States Court of Federal Claims. See Anderson v. United States, 344 F.3d 1343, 1350 

n.1(Fed. Cir. 2003) (stating that the United States Court of Federal Claims, “though an Article I 

court, . . . applies the same standing requirements enforced by other federal courts created under 

Article III”). Therefore, to establish standing, a plaintiff must show: 

(1) it has suffered an “injury in fact” that is (a) concrete and particularized and 

(b) actual or imminent, not conjectural or hypothetical; (2) the injury is fairly 

traceable to the challenged action of the defendant; and (3) it is likely, as opposed 

to merely speculative, that the injury will be redressed by a favorable decision. 

Friends of the Earth, Inc. v. Laidlaw Envtl. Servs., Inc., 528 U.S. 167, 180–81 (2000); see also

Figueroa v. United States, 466 F.3d 1023, 1029 (Fed. Cir. 2006) (“To establish standing, a plaintiff 

must show that he suffered an injury-in-fact that is both fairly traceable to the challenged conduct 

of the defendant and likely redressable by a favorable judicial decision.”). 

A “patentee” is entitled to file a “civil action for infringement of his patent.” 35 U.S.C. § 

281. The ‘patentee’ includes not only the patentee to whom the patent was issued but also the 

successors in title to the patentee.” 35 U.S.C. § 100(d); see also Waterman v. Mackenzie, 138 U.S. 

252, 260 (1891) (“There can be no doubt that he is ‘the party interested, either as patentee, 

assignee, or grantee,’ and as such entitled to maintain an action at law to recover damages for an 

infringement[.]”). “This has been interpreted to require that a suit for infringement must ordinarily 

be brought by a party holding legal title to the patent. . . . Accordingly, an assignee is the patentee 

and has standing to bring suit for infringement in its own name.” Enzo APA & Son, Inc. v. Geapag 

A.G., 134 F.3d 1090, 1093 (Fed. Cir. 1998) (internal citations omitted); see also Morrow v. 

Microsoft Corp., 499 F.3d 1332, 1339–40 (Fed. Cir. 2007) (“There are three general categories of 

plaintiffs . . . . The first category includes plaintiffs that hold all legal rights to the patent as the 

patentee or assignee of all patent rights—the entire bundle of sticks. Unquestionably, a patentee 

who holds all the exclusionary rights and suffers constitutional injury in fact from infringement is 

one entitled to sue for infringement in its own name.”). On the other hand, those “hold[ing] less 

than all substantial rights to the patent[,] lack exclusionary rights under the patent statutes to meet

the injury in fact requirement[, and therefore] . . . lack constitutional standing.” Morrow, 499 F.3d 

at 1340–41. 
9

The March 30, 2018 Second Amended Complaint alleges that Mynette is the “assignee of 

all rights, title and interest” to the ‘156, ‘425, ‘458, and ‘777 Patents, “including all rights to 

enforce the [Patents] and collect past and future damages for infringement.” 3/30/18 Am. Compl.

¶¶ 6, 17, 27, 37, 46; see also Mynette Assignment, USPTO PUBLIC PAIR (assigning “the entire 

right, title[,] and interest” in the ‘156 and ‘425 Patents and the ‘825 and ‘907 Applications to 

Mynette). As assignee, Mynette “is the patentee and has standing to bring suit for infringement[.]” 

See Enzo APA & Son, Inc., 134 F.3d at 1093 (“[A]n assignee is the patentee and has standing to 

bring suit for infringement in its own name.”). By assigning “all rights, title and interest” in the 

‘156, ‘425, ‘458, and ‘777 Patents to Mynette, however, Mr. Colby now “hold[s] less than all 

substantial rights to the patent[s,] . . . [and therefore] lack[s] constitutional standing.” Morrow, 

499 F.3d at 1340–41. 

For these reasons, the court has determined the March 30, 2018 Second Amended 

Complaint has alleged sufficient facts to establish that Mynette (“Plaintiff”) has standing to seek 

an adjudication of the claims alleged therein; but, Mr. Colby has not and is dismissed as a Plaintiff 

in this case. ECF No. 12 First Am. Compl. ¶ 16; see also RCFC 12(b)(1). 

C. Controlling Precedent Concerning Construction Of Patent Claims. 

In Markman v. Westview Instruments, Inc. (“Markman III”), 517 U.S. 370 (1996), the 

United States Supreme Court unanimously affirmed the en banc decision of the United States 

Court of Appeals for the Federal Circuit in Markman v. Westview Instruments, Inc. (“Markman 

II”), 52 F.3d 967 (Fed. Cir. 1995) (en banc), holding that the meaning and scope of a patent’s 

claims are issues of law to be determined by a federal trial judge. See Markman III, 517 U.S. at

372 (“We hold that the construction of a patent, including terms of art within its claim, is 

exclusively within the province of the court.”). When conducting patent claim construction, 

federal trial judges should seek to give any disputed claim term its “ordinary and customary 

meaning,” that is “the meaning that the term would have to a person of ordinary skill in the art in 

question at the time of the invention, i.e., as of the effective filing date of the patent application.” 

Phillips v. AWH Corp., 415 F.3d 1303, 1313 (Fed. Cir. 2005). 

1. The Person Of Ordinary Skill In The Art. 

As a threshold matter, a federal trial judge is required to examine patent claim terms and 

phrases from the perspective of a person of ordinary skill in the art.7 See Markman II, 52 F.3d at 

986 (“[T]he focus in construing disputed terms in claim language . . . is on the objective test of 

 

7 A determination of the person of ordinary skill in the art is a “basic factual inquir[y].” 

Graham v. John Deere Co., 383 U.S. 1, 17 (1966); see also Ruiz v. A.B. Chance Co., 234 F.3d 

654, 666–67 (Fed. Cir. 2000) (“Factors that may be considered in determining the ordinary level 

of skill in the art include: (1) the types of problems encountered in the art; (2) the prior art solutions 

to those problems; (3) the rapidity with which innovations are made; (4) the sophistication of the 

technology; and (5) the educational level of active workers in the field.”). 
10

what one of ordinary skill in the art at the time of the invention would have understood the term to 

mean.”); see also Shire Dev., LLC v. Watson Pharm., Inc., 787 F.3d 1359, 1364 (Fed. Cir. 2015)

(holding that a federal trial judge is required to afford claim terms “their ordinary and accustomed 

meaning as understood by one of ordinary skill in the art.”); Phillips, 415 F.3d at 1313 (“The 

inquiry into how a person of ordinary skill in the art understands a claim term provides an objective 

baseline from which to begin claim interpretation.”). This requirement is “based on the wellsettled understanding that inventors are typically persons skilled in the field of the invention and 

that patents are addressed to and intended to be read by others of skill in the pertinent art.” Phillips, 

415 F.3d at 1313. 

The court has determined that a person of ordinary skill in the art, in this case, would be 

one knowledgeable about electronics, including radio frequency, and radio frequency 

identification. ECF No. 16 (3/30/18 Am. Compl. ¶ 5); ECF No. 12-1 at 24 (‘156 Patent col. 1 ll. 

44 – col. 2. 22 ll.16); ECF No. 12-2 at 19 (‘425 Patent col. 1 ll. 29–62); ECF No. 12-3 at 41; (‘458 

Patent col. 2 ll. 13–35); ECF No. 12-4 at 40 (‘777 Patent col. 2 ll. 13–35); 2/8/18 TR 17, 19, 57–

59, 65, 83. 

2. Federal Trial Judges Should First Examine Intrinsic Evidence. 

After ascertaining the person of ordinary skill in the art, federal trial judges next determine 

the “ordinary and customary meaning” of the disputed claim terms. See Phillips, 415 F.3d at 1313. 

In doing so, a distinction must be drawn between intrinsic and extrinsic evidence. “In some cases, 

the ordinary meaning of claim language as understood by a person of skill in the art may be readily 

apparent even to lay judges, and claim construction in such cases involves little more than the 

application of the widely accepted meaning of commonly understood words.” Id. at 1314. In 

many cases, however, “the meaning of a claim term as understood by persons of skill in the art is 

often not immediately apparent” and federal trial judges should “look[] to ‘those sources available 

to the public that show what a person of skill in the art would have understood disputed claim 

language to mean.’” Id. (quoting Innova/Pure Water, Inc. v. Safari Water Filtration Sys., Inc., 381 

F.3d 1111, 1116 (Fed. Cir. 2004)). “Those sources include ‘the words of the claims themselves, 

the remainder of the specification, the prosecution history, and extrinsic evidence concerning 

relevant scientific principles, the meaning of technical terms, and the state of the art.’” Id. at 1314 

(quoting Innova/Pure Water, Inc., 381 F.3d at 1116). Although federal trial judges may rely on 

each of these sources of evidence, the United States Court of Appeals for the Federal Circuit has 

provided an analytical framework prioritizing “intrinsic evidence” over “extrinsic evidence.” C.R. 

Bard, Inc. v. U.S. Surgical Corp., 388 F.3d 858, 862 (Fed. Cir. 2004) (quoting Vanderlande Indus. 

Nederland BV v. Int’l Trade Comm’n, 366 F.3d 1311, 1318 (Fed. Cir. 2004) (“Under this approach 

to claim construction, evidence extrinsic to the patent document ‘can shed useful light on the 

relevant art,’ but is less significant than the intrinsic record in determining the ‘legally operative 

meaning of disputed claim language.’”)).

The United States Court of Appeals for the Federal Circuit has instructed that federal trial 

judges should begin claim construction by examining “intrinsic evidence,” including the “claims, 

the specification and, if in evidence, the prosecution history,” because it is the “most significant 

source of the legally operative meaning of disputed claim language.” Gillette Co. v. Energizer 

Holdings, Inc., 405 F.3d 1367, 1370 (Fed. Cir. 2005); see also Vitronics Corp. v. Conceptronic, 

Inc., 90 F.3d 1576, 1582 (Fed. Cir. 1996) (“[I]ntrinsic evidence is the most significant source of 
11

the legally operative meaning of disputed claim language.”). Within the “intrinsic evidence,” 

however, the United States Court of Appeals for the Federal Circuit has established a hierarchy for 

federal trial judges to follow. See Vitronics Corp., 90 F.3d at 1582–83 (“First, we look to the

words of the claims themselves . . . second, it is always necessary to review the specification . . . 

[and] [t]hird, the court may also consider the prosecution history of the patent[.]”). 

a. The Claims.

First, federal trial judges should look “to the words of the claims themselves, . . . to define 

the scope of the patented invention.” Id. at 1582. This is so, because oftentimes “the claims 

themselves provide substantial guidance as to the meaning of particular claim terms.” Phillips, 

415 F.3d at 1314. For example, “the context in which a term is used in the asserted claim can be 

highly instructive.” Id. Moreover, “[o]ther claims of the patent in question, both asserted and 

unasserted, can also be valuable sources of enlightenment as to the meaning of a claim term.” Id. 

(citing Vitronics Corp., 90 F.3d at 1582). For instance, “[b]ecause claim terms are normally used 

consistently throughout the patent, the usage of a term in one claim can often illuminate the 

meaning of the same term in other claims.” Id. at 1314–15. Conversely, “[d]ifferences among 

claims can also be a useful guide in understanding the meaning of particular claim terms.” Id. at 

1314. For example, “the presence of a dependent claim that adds a particular limitation gives rise 

to a presumption that the limitation in question is not present in the independent claim.” Id. at 

1315 (citing Liebel-Flarsheim Co. v. Medrad, Inc., 358 F.3d 898, 910 (Fed. Cir. 2004)).

b. The Specification.

“The claims, of course, do not stand alone. Rather, they are part of a fully integrated written 

instrument consisting principally of a specification that concludes with the claims. For that reason, 

claims must be read in view of the specification, of which they are a part.” Id. at 1315 (internal

quotation marks and citations omitted); see also In re Fout, 675 F.2d 297, 300 (C.C.P.A. 1982)

(“Claims must always be read in the light of the specification.”). As a matter of law, the 

specification “contain[s] a written description of the invention . . . in such full, clear, concise, and 

exact terms as to enable any person skilled in the art . . . to make and use the same[.]” 35 

U.S.C. § 112(a). As such, “the specification is always highly relevant to the claim construction 

analysis. Usually, it is dispositive; it is the single best guide to the meaning of a disputed term” 

Vitronics Corp., 90 F.3d at 1582; Astrazeneca AB, Aktiebolaget Hassle, KBI-E, Inc. v. Mut. 

Pharm. Co., 384 F.3d 1333, 1337 (Fed. Cir. 2004) (“A long line of cases indicates that evidence 

intrinsic to the patent—particularly the patent’s specification, including the inventors’ statutorilyrequired written description of the invention—is the primary source for determining claim 

meaning.” (italics added)). The specification is particularly important in two circumstances. 

The first is where the specification includes a “special definition given to a claim term by 

the patentee that differs from the meaning it would otherwise possess.” Akamai Techs., Inc. v.

Limelight Networks, Inc., 805 F.3d 1368, 1375 (Fed. Cir. 2015) (quoting Phillips, 415 F.3d at 

1316); see also Edwards Lifesciences LLC v. Cook, Inc., 582 F.3d 1322, 1329 (Fed. Cir. 2009) 

(holding that where two terms are used interchangeably, it “is akin to a definition equating the 

two”). In such circumstances, “a patentee can act as his own lexicographer to specifically define 

terms of a claim contrary to their ordinary meaning.” Process Control Corp. v. Hydreclaim Corp., 

190 F.3d 1350, 1357 (Fed. Cir. 1999); see also Boss Control, Inc. v. Bombardier Inc., 410 F.3d 
12

1372, 1377 (Fed. Cir. 2005) (holding that, in ascertaining the scope of the patent, deference should 

be afforded claims as defined by their “customary meaning,” with the caveat that the law affords 

patentees the right to serve as “lexicographers,” if a special or unique definition is clearly stated in 

the specification or prosecution history); Phillips, 415 F.3d at 1316 (“[O]ur cases recognize that 

the specification may reveal a special definition given to a claim term by the patentee that differs 

from the meaning it would otherwise possess. In such cases, the inventor’s lexicography 

governs.”). The specification, however, “must clearly redefine a claim term ‘so as to put a 

reasonable competitor or one reasonably skilled in the art on notice that the patentee intended to 

so redefine that claim term.’” Elekta Instrument S.A. v. O.U.R. Scientific Int’l, Inc., 214 F.3d 1302, 

1307 (Fed. Cir. 2000) (quoting Process Control Corp., 190 F.3d at 1357).

The second is where the specification “reveal[s] an intentional disclaimer, or disavowal, of 

claim scope by the inventor.” Phillips, 415 F.3d at 1316; see also CCS Fitness, Inc. v. Brunswick 

Corp., 288 F.3d 1359, 1366–67 (Fed. Cir. 2002) (holding that “a claim term will not carry its 

ordinary meaning if the intrinsic evidence shows that the patentee distinguished that term from 

prior art on the basis of a particular embodiment, expressly disclaimed subject matter, or described 

a particular embodiment as important to the invention.”). Any such disclaimer or disavowal, 

however, “must be clear.” Conoco, Inc. v. Energy & Envtl. Int’l, L.C., 460 F.3d 1349, 1357 (Fed. 

Cir. 2006) (“Indeed, an inventor may use the specification to intentionally disclaim or disavow the 

broad scope of a claim. However, this intention must be clear[.]” (internal citations omitted)). 

The court also must consider three additional rules of construction concerning the

specification. First, federal trial judges have been advised not to construe a claim to exclude a 

preferred embodiment disclosed in a specification, because “such an interpretation is rarely, if 

ever, correct[.]” Vitronics Corp., 90 F.3d at 1583 (citing Hoechst Celanese Corp. v. BP Chems.

Ltd., 78 F.3d 1575, 1581 (Fed. Cir. 1996) (“We share the district court’s view that it is unlikely 

that an inventor would define the invention in a way that excluded the preferred embodiment, or 

that persons of skill in this field would read the specification in such a way.”)). 

Second, when more than one embodiment is disclosed, the court “normally do[es] not 

interpret claim terms in a way that excludes disclosed examples in the specification.” Verizon 

Servs. Corp. v. Vonage Holdings Corp., 503 F.3d 1295, 1305 (Fed. Cir. 2007). But, where a claim 

term must be interpreted in a manner inconsistent with its ordinary meaning to cover all of the 

disclosed embodiments, and the applicant has not acted as his own lexicographer to “alter the 

ordinary meaning of the term,” such a term may be interpreted to claim less than all of the 

embodiments. See Helmsderfer v. Bobrick Washroom Equip., Inc., 527 F.3d 1379, 1383 (Fed. Cir. 

2008) (holding that the term “partially” should not be interpreted inconsistent with its ordinary 

meaning to include “totally” in order to encompass all of the disclosed embodiments, unless the 

applicant had acted as his own lexicographer to alter the term’s ordinary meaning); see also

Baran v. Med. Device Tech., Inc., 616 F.3d 1309, 1315–16 (Fed. Cir. 2010) (holding that, if a term 

is used in the specification to differentiate between disclosed embodiments, and the term is used 

in a claim, it is proper to construe the claim to cover only some of the disclosed embodiments, 

because the differentiation concedes coverage of only certain embodiments). 

Third, although the specification is important in discerning the meaning of the claims, 

federal trial judges must not “import[]” or graft limitations from the specification into the claim. 

See Am. Piledriving Equip., Inc. v. Geoquip, Inc., 637 F.3d 1324, 1330–31 (Fed. Cir. 2011) 
13

(holding that “the role of a [federal trial judge] in construing claims is not to redefine claim 

recitations or to read limitations into the claim to obviate factual questions of infringement and 

validity but rather to give meaning to the limitations actually contained in the claims, informed by 

the written description, the prosecution history[,] if in evidence, and any relevant extrinsic 

evidence”); see also Kara Tech. Inc. v. Stamps.com Inc., 582 F.3d 1341, 1348 (Fed. Cir. 2009)

(“The patentee is entitled to the full scope of his claims, and we will not limit him to his preferred 

embodiment or import a limitation from the specification into the claims.”); SciMed Life Sys., Inc. 

v. Advanced Cardiovascular Sys., Inc., 242 F.3d 1337, 1340 (Fed. Cir. 2001) (characterizing 

importing limitations from the specification into the claims as “one of the cardinal sins of patent 

law”); DSW, Inc. v. Shoe Pavilion, Inc., 537 F.3d 1342, 1347 (Fed. Cir. 2008) (holding that 

“[federal trial judges] cannot alter what the patentee has chosen to claim as his invention, that 

limitations appearing in the specification will not be read into claims, and that interpreting what is 

meant by a word in a claim is not to be confused with adding an extraneous limitation appearing 

in the specification, which is improper” (internal quotation marks and emphasis omitted)). 

c. The Prosecution History.

As a form of intrinsic evidence, the prosecution history also “can often inform the meaning 

of the claim language by demonstrating how the inventor understood the invention and whether 

the inventor limited the invention in the course of prosecution, making the claim scope narrower 

than it would otherwise be.” Phillips, 415 F.3d at 1317; see also Digital Biometrics, 

Inc. v. Identix, Inc., 149 F.3d 1335, 1344 (Fed. Cir. 1998) (observing that the prosecution history 

“may contain contemporaneous exchanges between the patent applicant and the [USPTO] about 

what the claims mean”); Graham, 383 U.S. at 33 (“It is, of course, well settled that an invention is 

construed not only in the light of the claims, but also with reference to the file wrapper or 

prosecution history in the Patent Office.”).

Under certain circumstances, the prosecution history can even trump the specification. See 

Graham, 383 U.S. at 33–34 (“Claims as allowed must be read and interpreted with reference to 

rejected ones and to the state of the prior art; and claims that have been narrowed in order to obtain 

the issuance of a patent by distinguishing the prior art cannot be sustained to cover that which was 

previously by limitation eliminated from the patent.”); see also Springs Window Fashions, LP v. 

Novo Indus., L.P., 323 F.3d 989, 994 (Fed. Cir. 2003) (quoting Pall Corp. v. PTI Techs. Inc., 259 

F.3d 1383, 1392 (Fed. Cir. 2001) (“It is well established that ‘the prosecution history limits the 

interpretation of claim terms so as to exclude any interpretation that was disclaimed during 

prosecution.’”)). Any disclaimer, however, “must be effected with ‘reasonable clarity and 

deliberateness.’” Springs Window Fashions, 323 F.3d at 994 (quoting N. Telecom Ltd. v. Samsung 

Elecs. Co., 215 F.3d 1281, 1294 (Fed. Cir. 2000)). In sum, regardless of whether an examiner 

agreed with an applicant’s statements during prosecution, any argument made “may lead to a 

disavowal of claim scope[.]” Seachange Int’l, Inc. v. C-COR, Inc., 413 F.3d 1361, 1374 (Fed. Cir. 

2005) (“An applicant’s argument made during prosecution may lead to a disavowal of claim scope 

even if the Examiner did not rely on the argument.”); see also Microsoft Corp. v. Multi-Tech Sys., 

Inc., 357 F.3d 1340, 1350 (Fed. Cir. 2004) (“We have stated on numerous occasions that a 

patentee’s statements during prosecution, whether relied on by the examiner or not, are relevant to 

claim interpretation.”). 
14

3. Federal Trial Judges May Examine Extrinsic Evidence, But Only In 

Limited Circumstances. 

As the United States Supreme Court has acknowledged, “[i]n some cases . . . the [federal 

trial] court will need to look beyond the patent’s intrinsic evidence and to consult extrinsic 

evidence in order to understand, for example, the background science or the meaning of a term in 

the relevant art during the relevant time period.” Teva Pharms. USA, Inc. v. Sandoz, Inc., 135 S.

Ct. 831, 841 (2015). But, if the court’s consideration of the intrinsic evidence resolves all “genuine 

ambiguit[ies]” about the meaning of a patent claim, as a matter of law, it is improper for the judge 

to rely on extrinsic evidence, i.e., evidence outside of the patent record, such as expert and inventor 

testimony, dictionaries, learned treatises, and articles. See Vitronics Corp., 90 F.3d at 1584 (“Only 

if there were still some genuine ambiguity in the claims, after consideration of all available intrinsic 

evidence, should the trial court have resorted to extrinsic evidence[.]”). The United States Court 

of Appeals for the Federal Circuit addressed this issue in Key Pharmaceuticals v. Hercon 

Laboratories Corporation, 161 F.3d 709 (Fed. Cir. 1998): 

This court has made strong cautionary statements on the proper use of extrinsic 

evidence, which might be misread by some members of the bar as restricting a trial 

court’s ability to hear such evidence. We intend no such thing. To the contrary, 

trial courts generally can hear expert testimony for background and education on 

the technology implicated by the presented claim construction issues, and trial 

courts have broad discretion in this regard. 

Furthermore, a trial court is quite correct in hearing and relying on expert 

testimony on an ultimate claim construction question in cases in which the intrinsic 

evidence . . . does not answer the question. 

What is disapproved of is an attempt to use extrinsic evidence to arrive at a claim 

construction that is clearly at odds with the claim construction mandated by the 

claims themselves, the written description, and the prosecution history, in other 

words, with the written record of the patent. 

Id. at 716 (citations and emphasis omitted); see also Zodiac Pool Care, Inc. v. Hoffinger Indus., 

Inc., 206 F.3d 1408, 1414 (Fed. Cir. 2000) (cautioning federal trial judges to “turn[] to extrinsic 

evidence only when the intrinsic evidence is insufficient to establish the clear meaning of the 

asserted claim”).
15

IV. THE COURT’S CONSTRUCTION OF CERTAIN PATENT CLAIMS TERMS. 

After the February 8, 2018 Claim Construction Hearing, the parties conferred and agreed 

on the construction of the following terms: “fibers;”8“key memory;”9“passport;”10 “response;”11

“responsive;”12 “RFID tag;”13 “state memory;”14 and “switch.”15 ECF No. 58–1 Ex. A (identifying 

“UNDISPUTED TERMS”). The parties, however, could not agree on the construction of the 

following terms: “ON/OFF state;” “responsive state;” “shield;” “shielding;” and “switch logic.” 

ECF No. 58–1 Ex. B (identifying “DISPUTED TERMS”). 

A. Construction Of The Disputed Claim Terms. 

1. “ON/OFF State.” 

The parties requested that the trial court construe the term “ON/OFF state,” as recited in 

Claims 1–3, 7, 11, and 14–17 of the ‘156 Patent, of which Claims 1, 11, and 14 are independent.

16

 

ECF No. 58–1 Ex. B. 

 

8 The parties agree that the term “fibers” is properly construed to mean “[a] thread, strand, 

filament or wire.” ECF No. 58–1 Ex. A. 

9 The parties agree that the term “key memory” is properly construed to mean “[v]olatile 

memory, non-volatile memory, FLASH, SDRAM, ROM, or DRAM which stores/holds a key of 

an RFID [t]ag.” ECF No. 58–1 Ex. A. 

10 The parties agree that the term “passport” is properly construed to mean “[a] passport 

booklet.” ECF No. 58–1 Ex. A. 

11 The parties agree that the term “response” is properly construed according to its “plain 

and ordinary meaning.” ECF No. 58–1 Ex. A. 

12 The parties agree that the term “responsive” is properly construed according to its “plain 

and ordinary meaning.” ECF No. 58–1 Ex. A. 

13 The parties agree that the term “RFID tag” is properly construed to mean “Radio 

Frequency Identification Tag.” ECF No. 58–1 Ex. A. 

14 The parties agree that the term “state memory” is properly construed to mean “[v]olatile 

memory, non-volatile memory, FLASH, SDRAM, ROM, or DRAM which stores/holds the status 

of an RFID [t]ag.” ECF No. 58–1 Ex. A. 

15 The parties agree that the term “switch” is properly construed to mean “[a] control device 

that makes or breaks an electrical connection in a circuit.” ECF No. 58–1 Ex. A. 

16 See 35 U.S.C. § 112(c) (“A claim may be written in independent or, if the nature of the 

case admits, in dependent or multiple dependent form.”). 
16

Claim 1 of the ‘156 Patent recites: 

1. A RFID tag comprising: 

an antenna configured to receive data in a first RF signal, to receive energy from 

the first RF signal, and to transmit data in a second RF signal, the transmission 

of the second RF signal being powered by the energy received from the first RF 

signal; and 

integrated circuitry including 

an input configured to receive data from the antenna and to receive power 

resulting from the energy received from the antenna, 

an output configured to provide the second RF signal to the antenna for 

transmission, 

a state memory configured to store an ON/OFF state including two or more 

ON states of the RFID tag; 

a key memory configured for storing a key for changing the ON/OFF state

stored in the state memory, and 

a switch logic configured to receive data from the input, to read the key 

from the key memory, to compare the received data with the read key, 

and to change the ON/OFF state stored in the state memory responsive 

to this comparison, the switch logic being further configured to 

determine whether or not to provide the second RF signal to the antenna 

for transmission, the determination being responsive to the ON/OFF 

state stored in the state memory. 

‘156 Patent col. 22 l. 56–col. 23 l. 13 (bold and italics added). 

a. Plaintiff’s Argument. 

Plaintiff argues that the term “ON/OFF state” should be construed to mean “[a] switchable 

status of an RFID [t]ag which includes an OFF state and at least one ON state.” ECF No. 58–1

Ex. B. Plaintiff’s construction “covers both ON and OFF states and various permutations thereof.” 

4/25/18 Pl. Br. at 9. In contrast, the Government’s “proposed [c]onstruction is a limited 

characterization of what should occur in an OFF state, and is really a construction of only a part 

 

An independent claim is self-contained and complete [u]nto itself. It is a full and 

complete description of an operative invention. A dependent claim refers back to 

an earlier claim and adds a limitation. A dependent claim is interpreted to include 

all limitations of the independent claim on which the dependent claim depends plus 

the added limitation. 

AMY L. LANDERS, UNDERSTANDING PATENT LAW § 4.04[A] (2d ed. 2012) (emphasis in original) 

(citing 37 C.F.R. § 1.75 (“One or more claims may be presented in dependent form, referring back 

to and further limiting another claim or claims in the same application.”)). 
17

of this term, the OFF state part.” 4/25/18 Pl. Br. at 9. As such, the Government’s proposed

construction “would essentially read out the usage of multiple ON states,” as recited in Claim 1 of 

the ‘156 Patent. 4/25/18 Pl. Br. at 10. Plaintiff’s proposed construction, however, “incorporates 

the presence of one OFF state, one or more ON states[,] or any combination thereof.” 4/25/18 Pl. 

Br. at 10. In addition, “the usage of ON/OFF state in the . . . specification supports Plaintiff’s

proposed construction[.]” 4/25/18 Pl. Br. at 10. For example, the ‘156 Patent discloses that “[i]n 

alternative embodiments, the RFID tag includes multiple ON states, optionally in combination 

with an OFF state.” 4/25/18 Pl. Br. at 10 (citing ‘156 Patent col. 19 ll. 30–32). FIG. 20 of the 

‘156 Patent also discloses an “embodiment that includes more than two states, where the read state 

can be something other than ‘an ON state’ or ‘an OFF state,’ and if so, a restricted RF response 

could be sent.” 4/25/18 Pl. Br. at 11 (italics omitted) (citing ‘156 Patent col. 21 l. 65–col. 22 l. 8). 

Other embodiments show “optional combinations of ON and OFF states are disclosed in the 

specification of the ‘156 Patent[.]” 4/25/18 Pl. Br. at 11 (citing ‘156 Patent col. 20 ll. 4–8, 50–61). 

The Government’s proposed construction ignores this disclosure and “exclude[s] these 

embodiments and violate[s] governing principles of claim construction.” 4/25/18 Pl. Br. at 11. 

b. The Government’s Argument. 

The Government states that the term “ON/OFF state” should be construed to mean “[a] 

switchable status in which the RFID tag will not transmit in response to receiving an RF signal 

when it is in an OFF state and will transmit in response to receiving an RF signal when it is in an 

ON state.” ECF No. 58–1 Ex. B. This construction “explains what ‘ON/OFF state’ means in a 

manner that is entirely consistent with the asserted patents’ specifications.” 4/25/18 Govt. Br. at 

5. In contrast, Plaintiff’s proposed construction 

fails to take any position whatsoever regarding what constitutes an “ON state” or 

an “OFF state,” indicating only that both are “included” in an “ON/OFF state.” 

This leaves the parties to later dispute what an “ON state” and an “OFF state” are 

as well as the inevitable question of whether an accused product or prior art 

reference “includes an OFF state and at least one ON state.” 

4/25/18 Govt. Br. at 5. 

In addition, Plaintiff’s proposed construction “should be rejected[,] because it fails [to] 

assist the trier of fact in assessing issues of infringement or invalidity—the very purpose of claim 

construction.” 4/25/18 Govt. Br. at 5. The Government adds that its “construction of ‘ON/OFF 

state’ [is derived] from repeated and consistent statements in the asserted patents.” 4/25/18 Govt.

Br. at 5. For example, the ‘156 Patent “repeatedly describe[s] an ‘OFF state’ as being one in which 

an RFID tag will not transmit in response to receiving an RF signal.” 4/25/18 Govt. Br. at 6 (citing 

‘156 Patent col. 4 ll. 13–14, col. 7 ll. 28–29, col. 21 l. 67–col. 22 l. 1–2). The ‘156 Patent also

describes “an ‘ON state’ as being one in which an RFID tag will transmit in response to receiving 

an RF signal.” 4/25/18 Govt. Br. at 6 (citing ‘156 Patent col. 3 ll. 18–21, col. 7 ll. 34–35, col. 19 

ll. 27–28). Therefore, the Government’s proposed construction “is entirely consistent with the . . 

. limitations” of Claim 1 of the ‘156 Patent; in contrast, Plaintiff’s proposed construction would 

render Claim 1 indefinite. 4/25/18 Govt. Br. at 7. 
18

c. Plaintiff’s Response. 

Plaintiff responds that the Government “erroneously argue[s] that Plaintiff’s construction 

‘fails to provide any clarity as to what . . . a state actually is.’” 5/11/18 Pl. Resp. at 1 (emphasis in 

original) (citing 4/25/18 Govt. Br. at 4–5). Both parties agree that “a ‘state’ is a ‘switchable 

status.’” 5/11/18 Pl. Resp. at 1 (emphasis omitted). This “agreed[-]upon portion of the proper 

construction, . . . adequately describes what is covered by the claims.” 5/11/18 Pl. Resp. at 1. 

Plaintiff’s proposed construction “accurately identif[ies] what statuses the ON/OFF state may take, 

including an OFF state and at least one ON state.” 5/11/18 Pl. Resp. at 1. The Government’s 

proposed construction, however, “go[es] beyond what is needed to construe ‘ON/OFF state,’ by 

limiting what each of an incomplete subset of those different states are” and “import[ing] 

limitations into the claims from examples appearing only in a patent’s written description.” 

5/11/18 Pl. Resp. at 1. In addition, the Government’s “proposed interpretations of ‘OFF state’ and 

‘ON state’ are not derived from repeated and consistent statements in the asserted patents.” 

5/11/18 Pl. Resp. at 2. Therefore, the Government’s “proposed construction fails to consider 

situations in which the RFID [t]ag is switched between the ON state and the OFF state through 

receipt of a specific command or commands through an RF signal.” 5/11/18 Pl. Resp. at 2. 

Moreover, “including ‘at least one ON state,’” as proposed by Plaintiff, “does not render [C]laim 

1 indefinite.” 5/11/18 Pl. Resp. at 3. 

d. The Government’s Response. 

The Government responds that each of Plaintiff’s arguments “is ultimately based on the 

same false assertion that [the Government’s] construction . . . does not ‘deal with the ON 

state’. . . and thereby excludes embodiments disclosed in the specification.” 5/11/18 Govt. Resp. 

at 1 (quoting 4/25/18 Pl. Br. at 12). Plaintiffs April 25, 2018 brief, however, “shows that [the 

Government’s] construction does, in fact, ‘deal with the ON state part of the construction.’” 

5/11/18 Govt. Resp. at 1 (citing 4/25/18 Pl. Br. at 6 (describing the Government’s proposed 

construction of “ON/OFF state” as “[a] switchable status in which the RFID tag will not transmit 

in response to receiving an RF signal when it is in an OFF state and will transmit in response to 

receiving an RF signal when it is in an ON state”)). Plaintiff also “wrongly argue[s] that [the 

Government’s] construction . . . would essentially read out the usage of multiple ON states[.]’” 

5/11/18 Govt. Resp. at 3 (quoting 4/25/18 Pl. Br. at 13). But, the Government’s “construction” 

“explicitly indicates what an ‘ON state’ is and, by its plain terms, takes no position whatsoever 

regarding the minimum or maximum number of allowable ON states, leaving that to the other 

terms of the asserted claims themselves.” 5/11/18 Govt. Resp. at 3. Consequently, Plaintiff’s 

proposed construction “ignores what is explicitly written in the asserted patents” and “improperly 

attempts to redraft [C]laim 1 of the ’156 [P]atent to lower the minimum number of ‘ON states’ of 

the RFID tag from two (which [C]laim 1 explicitly requires) to one, thereby broadening the scope 

of that claim.” 5/11/18 Govt. Resp. at 4 (italics in original). The Government’s construction, 

however, is derived “from the specification, excludes no embodiments described therein and 

provides an explicit construction of ‘ON/OFF state’ via direct reference to how the specifications 

of the asserted patents themselves define the constituent ‘ON’ and ‘OFF’ states.” 5/11/18 Govt. 

Resp. at 4. 
19

e. The Court’s Resolution. 

The parties’ proposed constructions of the term “ON/OFF state” describe different aspects 

of the “ON/OFF state.” Plaintiff’s proposed construction describes what the “ON/OFF state” is;

the Government’s proposed construction describes what the “ON/OFF state” does. For the reasons 

that follow, the court has determined that the proper construction of the term “ON/OFF state”

requires a combination of both parties’ proposed constructions. 

First, the claims of the ‘156 Patent recite that the “ON/OFF state” is either in an ON or 

OFF state that can change between the two. ‘156 Patent col. 23 ll. 5–8 (“a switch logic configured 

. . . to change the ON/OFF state” (italics added)), col. 23 ll. 56–58 (same), col. 24 ll. 21–24 (same). 

This function is also described in the written description of the ‘156 Patent, providing that the 

“RFID tag” is “switched between the ON state and the OFF state[.]” ‘156 Patent col. 19 ll. 28–29

(italics added); see also ‘156 Patent Fig. 4A–4B (depicting an “RFID tag” in an “OFF state” and 

in an “ON state.”). 

Claim 1 of the ‘156 Patent recites an “RFID tag comprising: an antenna configured to 

receive data in a first RF signal . . . and to transmit data in a second RF signal.” ‘156 Patent col. 

22 ll. 56–59 (italics added). Claim 1 also recites that the “ON/OFF state” necessarily controls 

whether the “second RF signal” is transmitted from the “RFID tag.” ‘156 Patent col. 23 ll. 9–13

(“switch logic being further configured to determine whether or not to provide the second RF 

signal to the antenna for transmission, the determination being responsive to the ON/OFF state

stored in the state memory.” (italics added)). The same limitation is also recited in Claims 11 and 

14 of the ‘156 Patent. ‘156 Patent col. 23 ll. 60–64, col. 24 ll. 26–29. Therefore, the claims of the 

‘156 Patent require that the “ON/OFF state” determines whether data can be transmitted from the 

“RFID tag” by the “second RF signal.”17 The written description of the ‘156 Patent, also provides 

that, “in an OFF state, the RFID tag will not transmit a response signal . . . . [But, i]n an ON state, 

the RFID tag will transmit a response signal[.]” ‘156 Patent col. 19 ll. 25–28 (italics added); see 

also ‘156 Patent col. 3 ll. 18–21 (“In some embodiments, when the switch is in an off state, the 

RFID tag will not transmit and when the switch is in an on state the RFID tag will transmit in 

response to an RF (radio frequency) signal.”). 

 

17 The “ON/OFF state” does not cause data to be transmitted from the “RFID tag;” instead, 

the “ON/OFF state” permits or prohibits data transmission. As described in the ‘156 Patent, receipt 

of the “first RF signal” allows data to be transmitted from the “RFID tag” by the “second RF 

signal.” See, e.g., ‘156 Patent col. 7, ll. 52–55 (“RFID Antenna 140 is configured for sending a 

radio frequency (RF) signal from Switchable RFID Device 100 in response to a received signal.” 

(italics added)). Whether that data can be transmitted depends on whether the “RFID tag” is in an

“ON state” or in an “OFF state.” ‘156 Patent col. 19 ll. 25–28 (“In some embodiments, in an OFF 

state, the RFID tag will not transmit a response signal and thus is not remotely detectable using an 

RF signal. In an ON state, the RFID tag will transmit a response signal[.]”); see also ‘156 Patent 

col. 3 ll. 18–21 (“In some embodiments, when the switch is in an off state, the RFID tag will not 

transmit and when the switch is in an on state the RFID tag will transmit in response to an RF 

(radio frequency) signal.”). 
20

In addition, Claim 1 of the ‘156 Patent also recites that the “ON/OFF state includ[es] two 

or more ON states[.]” ‘156 Patent col. 23 ll. 1–2 (italics added). Similarly, Claim 7, that depends 

on Claim 1, recites “at least two alternative ON states.” ‘156 Patent col. 23 ll. 26–29. The written 

description of the ‘156 Patent also provides that “[i]n alternative embodiments, the RFID tag 

includes multiple ON states, optionally in combination with an OFF state.” ‘156 Patent col. 19 ll. 

30–32 (italics added). Therefore, the “ON/OFF state” may include at least one “ON state” or 

multiple “ON states.” It is not clear from the claims, however, whether or how these numerous 

“ON states” effect data transmission, i.e., the “second RF signal.” But, the ‘156 Patent is described 

as having, “[i]n some embodiments, the switch includes multiple on states in which different 

information or signals are transmitted responsive to the state of the switch.” ‘156 Patent col. 3 ll. 

21–24 (italics added). So, in those embodiments of the “RFID tag,” that have more than one “ON 

state,” the “ON states” respond to the transmission of “different information or signals.” 

Therefore, after reviewing the intrinsic evidence of the ‘156 Patent, including the claims, 

the written description, and the prosecution history,18 the court has determined that a person of 

ordinary skill in the art would understand the term “ON/OFF state” to mean: 

A switchable status that includes an OFF state and at least one ON state. An OFF 

state is one in which data cannot be transmitted from a RFID tag; an ON state is 

one in which data can be transmitted from a RFID tag. 

2. “Responsive State.” 

The parties have requested that the court construe the term “responsive state,” as recited in 

Claims 2 and 18 of the ‘458 Patent, both of which depend from Claim 1. ECF No. 58–1 Ex. B. 

Claim 2 of the ‘458 Patent recites: 

2. The passport of [C]laim 1, wherein the RFID tag is switchable from a 

non-responsive state to a responsive state, in response to data received via the 

antenna. 

‘458 Patent col. 38 ll. 1–3 (bold and italics added). 

Claim 18 of the ‘458 Patent recites: 

18. The passport of [C]laim 6, wherein the switch logic is configured to place 

the RFID tag in a responsive state in which the identifying information can be read 

from the RFID tag. 

‘458 Patent col. 38 ll. 47–50 (bold and italics added). 

 

18 The prosecution history of the ‘156 Patent did not include relevant information regarding 

the construction of the term “ON/OFF state.” 
21

a. Plaintiff’s Argument. 

Plaintiff argues that the term “responsive state” should be construed to mean “[a] state in 

which an RFID tag is available to react[.]” ECF No. 58–1 Ex. B. Plaintiff’s proposed construction 

is consistent with the claims of the ‘458 Patent “as it accurately describes the effect of the tag being 

placed in a responsive state, i.e.[,] in a state which permits the reading of identifying information 

from the tag.” 4/25/18 Pl. Br. at 20. 

b. The Government’s Argument. 

The Government argues that the term “responsive state” should be construed according to

its “[p]lain and ordinary meaning[.]” ECF No. 58–1 Ex. B. Plaintiff’s proposed construction 

should be rejected, because: (1) “the claims already provide a clear definition for ‘responsive state,’ 

rendering further construction unnecessary[;]” and (2) it “impermissibly attempts to broaden the 

scope of [the term] ‘responsive state.’” 4/25/18 Govt. Br. at 21. The claims of the’458 Patent 

“explicitly provide [that], a responsive state is one in which the ‘identifying information can be 

read from the RFID tag.’” 4/25/18 Govt. Br. at 21 (citing ‘458 Patent col. 38 ll. 49–50). As the 

United States Court of Appeals for the Federal Circuit “has repeatedly held, the words of the claims 

themselves are the single most important tool in claim construction.” 4/25/18 Govt. Br. at 21 

(citing Digital Biometrics, Inc., 149 F.3d at 1344 (“Even within the intrinsic evidence, however, 

there is a hierarchy of analytical tools. The actual words of the claim are the controlling focus.”). 

Moreover, “while it is true that the patentee is generally free to act as his/her own lexicographer, 

special definitions to words must be clearly defined in the specification.” 4/25/18 Govt. Br. at 22

(citing Markman II, 52 F.3d at 980 (“As we have often stated, a patentee is free to be his own 

lexicographer. The caveat is that any special definition given to a word must be clearly defined in 

the specification.” (citations omitted)). In this case, however, “none of the specifications of the 

asserted patents even reference the term ‘react,’ much less present it as part of the definition of 

‘responsive state.’” 4/25/18 Govt. Br. at 22 (italics in original). 

The Government adds that Plaintiff relies on extrinsic evidence although it is “improper 

and unnecessary . . . where the meaning of a claim limitation is apparent from the intrinsic 

evidence.” 4/25/18 Govt. Br. at 22. Finally, “and perhaps more importantly, Plaintiff[’s] 

construction impermissibly attempts to broaden the scope of the term ‘responsive state.’” 4/25/18 

Govt. Br. at 22. “Indeed, any state ‘in which an RFID tag is available to react[,]’ but ‘in which 

the identifying information cannot be read from the RFID tag’ would be beyond the plain meaning 

of [C]laim 18 [of the ‘458 Patent,] but within the scope of Plaintiff[’s] proposed construction. This 

is impermissible, and for that reason alone Plaintiff[’s] construction should be rejected.” 4/25/18 

Govt. Br. at 23 (italics in original). 

c. Plaintiff’s Response. 

Plaintiff responds that Government construes “responsive state,” based on “what can occur 

when the RFID [t]ag is placed in a responsive state[.]” 5/11/18 Pl. Resp. at 15. But, “[c]onstruing 

a claim term by what the term does, or how it performs, rather than how the term should be defined, 

is improper and violates claim construction principles.” 5/11/18 Pl. Resp. at 15. In addition, the 

Government “overlook[s] . . . the detailed discussion on this term [that] transpired” at the February 

8, 2018 Claim Construction Hearing, where term “responsive state” was discussed in the context 
22

of being “viewed as a ‘state of readiness’... [that] permits ‘the identifying information to be read 

from the RFID tag.’” 5/11/18 Pl. Resp. at 15–16; 2/8/18 TR at 90–96. This construction is 

supported by the written description of the ‘458 Patent. 5/11/18 Pl. Resp. at 16 (citing ‘458 Patent 

col 5 ll. 18–25 (“In various embodiments, one or more switches are used to change operation of 

an RFID tag from a responsive state to a non-responsive state, to change operation of an RFID tag 

from one responsive state to another responsive state[.]”)). Plaintiff adds that during the February 

8, 2018 Claim Construction Hearing, “the Government indicated that ‘available to react’ was 

acceptable.” 5/11/18 Pl. Resp. at 16 (citing ECF No. 54 (2/8/18 TR 99–100)). Therefore,

Plaintiff’s proposed construction does not “broaden the scope of the term ‘responsive state,’”

instead; it is the Government that attempts to “incorporate explicit and separate limitations . . . into 

the construction of the . . . term[.]” 5/11/18 Pl. Resp. at 17. 

d. Government’s Response. 

The Government responds that Plaintiff’s proposed construction of the term “responsive 

state” “redefin[es] that term and broaden[s] the scope of the asserted claims that recite it.” 5/11/18 

Govt. Resp. at 16. As a threshold matter, “not a single one of the specifications of the asserted 

patents even uses the term ‘react,’ much less presents it as part of the definition of ‘responsive 

state.’” 5/11/18 Govt. Resp. at 16. In addition, Plaintiff’s proposed construction goes beyond the 

scope of, and is inconsistent with, the plain meaning of the claims of the ‘458 Patent. 5/11/18 

Govt. Resp. at 16. Plaintiff’s suggestion that the Government indicated that “the construction 

‘available to react’ was acceptable” during the February 8, 2018 Claim Construction Hearing is 

“incorrect for several reasons.” 5/11/18 Govt. Resp. at 16. Plaintiff never disputed that the 

Government’s “position was that ‘responsive state’ should be construed according to its plain and 

ordinary meaning” prior to Plaintiff’s April 25, 2018 Opening Claim Construction Brief. 5/11/18 

Govt. Resp. at 16–17. In fact, “it would have been untenable for Plaintiff[’s] counsel to have taken 

such a position given that Plaintiff[] . . . ha[s] construed the same term ‘responsive state’ three 

different ways in the three Joint Claim Construction Statements that have been filed thus far.” 

5/11/18 Govt. Resp. at 17 (italics in original). 

e. The Court’s Resolution. 

Claim 2 of the ‘458 Patent recites “wherein the RFID tag is switchable from a 

non-responsive state to a responsive state, in response to data received via the antenna.” ‘458 

Patent col. 38 ll. 1–3. Claim 18 of the ‘458 Patent recites “wherein the switch logic is configured 

to place the RFID tag in a responsive state in which the identifying information can be read from 

the RFID tag.” ‘458 Patent col. 38 ll. 47–50. The written description of the ‘458 Patent also

provides that 

[i]n various embodiments, one or more switches are used to change operation of an 

RFID tag from a responsive state to a non-responsive state, to change operation of 

an RFID tag from one responsive state to another responsive state, to enter data into 

an RFID device, to control an external device, or the like. 

‘458 Patent col. 5 ll. 19–25. 

The written description of the ‘458 Patent likewise provides that 
23

[s]ome embodiments of the invention include a switchable RFID tag is configured 

to be remotely switched using an RF signal. In some embodiments, in an OFF state, 

the RFID tag will not transmit a response signal and thus is not remotely detectable 

using an RF signal. In an ON state, the RFID tag will transmit a response signal. 

‘458 Patent col. 34 ll. 4–9. 

Claims 2 and 18 and written description of the ‘458 Patent contemplate multiple “states” 

in which the “RFID tag” can transmit responses and “states” in which it cannot, i.e., a “responsive 

state” and a “non-responsive state.” Whether a “RFID tag” is able to transmit a response, i.e., 

whether the “RFID tag” is “detectable,” is not the same as whether the “RFID tag” is “readable.”

The terms “responsive” and “readable” have different meanings, because Claims 2 and 17 of the 

‘458 Patent, both of which depend from Claim 1 of the ‘458 Patent, recite “wherein the RFID tag 

is switchable from a non-responsive state to a responsive state” and “wherein the RFID tag is 

switchable from a non-readable state to a readable state.” ‘458 Patent col. 38 ll. 1–3, 44–46 

(italics added). Likewise, Claims 7 and 18, both of which depend from Claim 1 of the ‘458 Patent, 

recite “wherein the switch logic is configured to place the RFID tag in a readable state in which 

the identifying information can be read from the RFID tag” and “wherein the switch logic is 

configured to place the RFID tag in a responsive state in which the identifying information can be 

read from the RFID tag,” respectively. ‘458 Patent col. 38 ll. 19–21, 47–50 (italics added). If the 

patentee intended the terms “responsive” and “readable” to be interchangeable, Claims 2 and 17 

and Claims 7 and 18 would be redundant. Therefore, the claims of the ‘458 Patent require that the 

patentee intended that the terms “responsive” and “readable” have different meanings. See 

Phillips, 415 F.3d at 1314 (“Differences among claims can . . . be a useful guide in understanding 

the meaning of particular claim terms.”); see also ECF No. 39 App’x at 999 (amending Claim 31 

of the ‘907 Application to recite “readable state” instead of “responsive state” (italics added)); 

compare ‘458 Patent col. 11 ll. 23–24 (“[A] person can allow information within an RFID tag to 

be read by removing the item from the holder[.]”), col. 11 ll. 26–29 (“Replacing the item within 

the holder, or closing the holder, secures the item’s RFID tag from unwanted readings from, or 

detection by, unknown or unauthorized RFID readers.”), col. 12 ll. 62–64 (“[T]he lock reads the 

RFID tag for some purpose, such as to read the key numbers from RFID tags[.]”), col. 16 ll. 11–

15 (“A serial number of the RFID Tag 140 is programmed into the Reader/Lock control 710 . . .

by bringing the RFID Tag 140 within the reading range of the Reader/Lock Control 710, such that 

the serial number can be read from the RFID Tag 140.”), col. 16 ll. 18–20 (“The RFID Tag 140 is 

detected by the Reader/Lock Control 710. The serial number is read from the detected RFID Tag 

140 by Reader/Lock Control 710.”), col. 17 ll. 39–41 (“When the cover is opened medical 

person[ne]l can read data from the RFID tag.”), col. 22 ll. 19–22 (“Switchable RFID Tag 2230 is 

configured for a user to be able to repeatedly turn on and off the function (e.g., de[t]ectability or 

readability) of Tag 2260 using Switch 2270.”), col. 23 ll. 39–41 (“Switch 2270 (or a plurality 

thereof) is optionally configured to separately control detection of and readability of Tag 2260

with ‘458 Patent col. 23ll. 41–43. “Detection occurs when Tag 2260 sends any response signal

while readability is a function of the data that may be included in the contents of the response 

signal”)).

In other words, when a “RFID tag” is in a “responsive state,” it is able to transmit a 

response; but, when a “RFID tag” is in a “responsive state,” the “RFID tag” may be, but need not 

necessarily be, “readable.” 
24

For these reasons, after reviewing the intrinsic evidence of the ‘458 Patent, including the 

claims, the written description, and the prosecution history,19 the court has determined that a person 

of ordinary skill in the art would understand the term “responsive state,” to mean: 

A state in which a RFID tag is able to transmit a response. 

3. “Shield” and “Shielding.” 

The parties have requested that the court construe the terms “shield”

20 and “shielding,”21

as recited in Claims 1, 2, 4, 5, and 7 of the ‘425 Patent, of which Claim 1 is independent; Claims 

1, 10, 11, and 13 of the ‘458 Patent, of which Claim 1 is independent; and Claims 1 and 12 of the 

‘777 Patent, of which Claim 1 is independent. ECF No. 58–1 Ex. B–1. 

Claim 1 of the ‘425 Patent recites: 

1. A passport comprising: 

an RFID tag configured to transmit identifying information; 

a surface configured to visually display the identifying information; and 

a cover including a first part and a second part separated by a fold, the first part 

including the RFID tag and the second part including a radio frequency 

shielding configured to shield the RFID tag when the cover is closed, and 

configured to allow reading of the RFID tag when the cover is open, the radio 

frequency shielding including metallic fibers disposed within the second part. 

‘425 Patent col. 16 ll. 23–34 (bold and italics added). 

Claim 1 of the ‘458 Patent recites: 

1. A passport comprising: 

an antenna; 

an RFID tag configured to transmit identifying information using the antenna; 

a surface configured to visually display the identifying information; 

 

19 In a Preliminary Amendment dated October 28, 2015, the patentee amended Claim 31 

of the ‘907 Application to recite “readable state,” instead of “responsive state,”, however, there is 

no explanation why the amendment was made. ECF No. 39 App’x at 999 (italics added). 

20 The term “shield” is used in the relevant claims as a verb, e.g., “a radio frequency 

shielding configured to shield the RFID tag.” ‘425 Patent col. 16 ll. 30–31 (italics added).

21 The term “shielding” is used in the relevant claims as a noun, e.g., “a radio frequency 

shielding configured to shield the RFID tag.” ‘425 Patent col. 16 ll. 30–31 (italics added).
25

a passport cover including a first part and a second part separated by a fold, the first 

part including the RFID tag; and 

a radio frequency shielding configured to shield the RFID tag when the cover is 

closed, and configured to allow reading of the RFID tag when the cover is open, 

the radio frequency shielding including metallic fibers. 

‘458 Patent col. 37 ll. 48–60 (bold and italics added). 

Claim 1 of the ‘777 Patent recites: 

1. A method of reading a passport, the method comprising: 

moving a radio frequency shielding away from an RFID tag by opening a cover of 

the passport, opening of the cover resulting in movement of a first part of the 

cover away from a second part of the cover, the first part including the RFID 

tag and the second part including the radio frequency shielding, the radio 

frequency including metallic fibers configured to shield the RFID tag when the 

cover is closed and to allow reading of the RFID tag when the cover is open; 

and 

reading identifying information from the RFID tag, the RFID tag being powered by 

power received through an RFID antenna.

‘777 Patent col. 37 ll. 48–61 (bold and italics added). 

a. Plaintiff’s Argument. 

Plaintiff argues that the term “shield” should be construed to mean “[t]o attempt to prevent 

the transmission of radio frequency signals[;]” and the term “shielding” to mean “[a] material such 

as a metallic fiber that attempts to prevent reading of an RFID tag by blocking radio frequency 

signals.” ECF No. 58–1 Ex. B. In the claims of the ‘425, ‘458, and ‘777 Patents, the terms 

“shield” and “shielding” are used to “describe[] . . . attempts to prevent or interfere with radio 

frequency signals.” 4/25/18 Pl. Br. at 13. The ‘425 Patent is “directed to the use of shielding in 

relation to RFID [t]ags,” discloses “a number of embodiments including shielded containers for 

storing devices” and describes “the type of material used for shielding . . . , the shielding 

dimensions . . . , material characteristics[,] and the manner of attachment[].” 4/25/18 Pl. Br. at 13. 

Therefore, Plaintiff’s “include . . . the words ‘to attempt’ in their proposed construction . . . as it 

properly takes into account . . . the varying degrees of effectiveness of shields.” 4/25/18 Pl. Br. at 

13. As a result, Plaintiff’s proposed construction “places the term[s] in [the] proper context as 

used in the claims and specification of the [a]sserted [p]atents.” 4/25/18 Pl. Br. at 14. In contrast, 

the Government’s “reliance on plain and ordinary meaning lacks this context and creates the 

potential for future disputes in this case as to the application of [‘shield’ or ‘shielding’] in 

infringement scenarios.” 4/25/18 Pl. Br. at 14. 

b. The Government’s Argument. 

The Government argues that the terms “shield” and “shielding” should be construed 

according to their “[p]lain and ordinary meaning[s].” ECF No. 58–1 Ex. B. The terms “shield” 
26

and “shielding” should be construed according to their plain and ordinary meanings to one of 

ordinary skill in the art, rather than by “inappropriately insert[ing] additional meaning into the 

terms, thereby altering the meaning of the claim limitations containing them.” 4/25/18 Govt. Br. 

at 8. Specifically, the “plain meaning” and “context” of the claims provide that “the verb ‘shield’ 

means to prevent reading of the RFID tag when the cover is closed, [but] to allow reading of the 

RFID tag when the cover is open, i.e., when the ‘shielding’ is removed.” 4/25/18 Govt. Br. at 9. 

Therefore, “‘shielding’ is a cover or device that shields” so that “the claims on their own provide 

the meaning of ‘shield’ and ‘shielding’ and further construction can only serve to unnecessarily 

confuse the question.” 4/25/18 Govt. Br. at 9. 

Plaintiff’s concern that “down the line, experts might not agree about the meaning of 

‘shield[,]’ . . . fails for two reasons.” 4/25/18 Govt. Br. at 9. First, this “presumes that there will 

be a disagreement between experts at some hypothetical future point.” 4/25/18 Govt. Br. at 9. 

Second, Plaintiff has “no evidence of deviation from the plain meaning of the term[.]” 4/25/18 

Govt. Br. at 10. The claims “do not themselves contemplate that shielding might be partial or 

merely ‘reduce’ the transmission of signals.” 4/25/18 Govt. Br. at 10. Although, Plaintiff contends 

that the written description disclosesthis feature, “the specification does not—and cannot—change 

the plain meaning of the terms chosen by the patent drafter and conveyed in the claims.” 4/25/18 

Govt. Br. at 10. Therefore, Plaintiff’s proposed construction “goes beyond th[e] plain meaning 

and impermissibly broadens, muddles[,] and confuses it.” 4/25/18 Govt. Br. at 11. 

Likewise, Plaintiff’s “insistence on inserting ‘attempt’ into [both] proposed constructions 

should fail[,] because it is unsupported by the intrinsic evidence.” 4/25/18 Govt. Br. at 11. “[T]he 

word ‘attempt’ creates ambiguity where none currently exists, fails to inform the public of what is 

claimed, and thereby renders the term indefinite.” 4/25/18 Govt. Br. at 11. This is so, because 

“insertion of the word ‘attempt’ into the construction of ‘shield’ means that the claim is defined 

not only by what the object at issue is, but also by a subjective belief regarding what the creator of 

the object intended it to do or try to do.” 4/25/18 Govt. Br. at 11. Therefore, the court “should not 

construe the term ‘shield’ or ‘shielding’ in a way that would render the claims indefinite, but rather 

should permit those terms to be understood according to their plain and ordinary meaning.” 

4/25/18 Govt. Br. at 12. 

c. Plaintiff’s Response. 

Plaintiff responds that “[t]here are several reasons why [the Government’s] proposed 

construction of shield/shielding should not be adopted.” 5/11/18 Pl. Resp. at 4. First, “‘the plain 

and ordinary meaning may be inadequate when a term has more than one ordinary meaning or 

when reliance on a term’s ordinary meaning does not resolve the parties’ dispute.’” 5/11/18 Pl. 

Resp. at 4 (quoting Eon Corp. IP Holdings v. Silver Spring Networks, 815 F.3d 1314, 1318 (Fed. 

Cir. 2016)). Second, “it is necessary to include the ‘attempt to prevent’ language,” because the 

written descriptions of the asserted patents “describe[] embodiments where the ‘effectiveness of 

the RFID shielding can be varied considerably based on choices of radio frequency shielding 

materials and their thicknesses, mesh sizes, and so forth.’” 5/11/18 Pl. Resp. at 5 (quoting ‘425 

Patent col. 7 ll. 55–58). The Government “contend[s] that the word ‘attempt’ creates ambiguity,” 

but “the ‘attempt to prevent’ language does not render the claim inappropriately subjective, [but] 

instead describes specific and explicit examples of shielding given in the specifications.” 5/11/18 

Pl. Resp. at 5–6. Third, Plaintiff’s proposed construction is supported by the Wireless Dictionary
27

that defines “shield” as “[a] metal covering used to restrict the transfer of electrostatic and 

electromagnetic signals (radio signals) to or from equipment or electronic circuits.” WIRELESS

DICTIONARY, http://www.wirelessdictionary.com/index.asp (enter “shield” in search field)). 

d. The Government’s Response. 

The Government responds that Plaintiff “conclude[s] without support or analysis that [the 

asserted patents] demonstrate that [its proposed] construction is appropriate. [But], the term 

‘attempt,’ while contained in [Plaintiff’s proposed] construction, does not appear in any portion of 

the patent that [Plaintiff] cite[s] or reference[s].” 5/11/18 Govt. Resp. at 5. Second, Plaintiff 

“attempt[s] to avoid a plain and ordinary meaning construction by asserting without support that 

‘shield’ and ‘shielding’ are terms of art.” 5/11/18 Govt. Resp. at 5. Third, Plaintiff “cites no 

authority for the proposition that a person of ordinary skill in the art would understand the term 

‘shield’ differently than the plain and ordinary meaning of the word[.]” 5/11/18 Govt. Resp. at 5. 

Moreover, “there is no indication given that the patentee intended to act as his own lexicographer 

. . . to define the term ‘shield.’” 5/11/18 Govt. Resp. at 5–6. In addition, “[t]he embodiments 

disclosed by the patent are explicitly non-exhaustive.” 5/11/18 Govt. Resp. at 6 (citing ‘777 Patent 

col 37 ll. 42–45 (“Hence, these descriptions and drawings should not be considered in a limiting 

sense, as it is understood that the present invention is in no way limited to only the embodiments 

illustrated.”)). Therefore, Plaintiff’s attempt to “define the term ‘shield’ as a function of the

embodiments, . . . would render the limitation indefinite, because neither the patents nor the 

Plaintiff[] can provide a complete list of all possible embodiments and therefore of what their 

construction would include.” 5/11/18 Govt. Resp. at 6. Finally, Plaintiff reliance on “portions of 

the [written description] which [it] describe[s] as ‘address[ing] the varying effectiveness of shields 

and shielding’” is mistaken, because “the patent does not in fact discuss the varying effectiveness 

of the shielding, but rather that different embodiments of the shield may block different power 

levels to effect the shielding operation.” 5/11/18 Govt. Resp. at 6. 

e. The Court’s Resolution. 

Claim 1 of the ‘425 Patent recites “a radio frequency shielding configured to shield the 

RFID tag when the cover is closed, and configured to allow reading of the RFID tag when the 

cover is open[.]” ‘425 Patent col. 16 ll. 30–33. Claim 1 of the ‘458 Patent also recites identical 

limitations [‘458 Patent col. 37 ll. 57–59;] and Claim 1 of the ‘777 Patent similarly recites “radio 

frequency shielding . . . configured to shield the RFID tag when the cover is closed and to allow 

reading of the RFID tag when the cover is open.” ‘777 Patent col. 37 ll. 55–58. As such, the 

claims of the ‘425, ‘458, and ‘777 Patents indicate that “shielding” is a material that “shields,” i.e., 

inhibits or interferes with the readability of a RFID tag. These claims, however, do not specify

how and the extent to which “shielding” inhibits or interferes with readability of a “RFID tag.” 

(italics added). 

The written descriptions of the ‘425, ‘458, and ‘777 Patents, provide important guidance:

[t]he RFID shielding shields an RFID tag from a reader in two ways. First, the 

RFID shielding greatly reduces the power being broadcast from the reader that 

reaches the RFID tag within the holder. This cuts the power available to the RFID 
28

tag to transmit information back. Secondly, even if the RFID tag receives enough 

power to transmit, the signal sent from the RFID tag is also attenuated.

[22]

425 Patent col. 7 ll. 48–54 (italics added); see also ‘458 Patent col. 13, ll. 52–58 (same); ‘777 

Patent col. 13, ll. 52–58 (same).

‘458 Patent Fig. 8. 

 

22 The Authoritative Dictionary of IEEE Standard Terms defines “attenuation,” in the “data 

transmission” context, as a “general term used to denote a decrease in signal magnitude in 

transmission from one point to another.” INST. OF ELEC. AND ELECS. ENG’RS, THE AUTHORITATIVE 

DICTIONARY OF IEEE STANDARD TERMS 60 (7th ed. 2000); see also Attenuate, WEBSTER’S NEW 

WORLD COLLEGE DICTIONARY (5th ed. 2016) (defining “attenuate,” in the “electronics” context, 

as “to reduce the amplitude or strength of (an electrical signal)”). 
29

FIG. 8 of the ‘458 Patent (reproduced on page 28) also shows a “Clamshell ID 810,” 

including “an RFID Tag 140, and a Cover 820 connected to Base 830 . . . connected along an edge 

or Fold 840.” ‘458 Patent col. 16 ll. 34–38. The “Cover 820 and/or Base 830 include RFID 

shielding configured to attenuate radio frequency signals to or from RFID Tag 140 when Cover 

820 is closed (e.g., shut), and not to the attenuate or attenuate to a lesser extent, radio frequency 

signals to or from RFID Tag 140, when the Cover 820 is open.” ‘458 Patent col. 16 ll. 38–43. In 

other words, “[t]he RF shielding and RFID Tag 140 are configured such that, when Clamshell ID 

810 is closed the shielding interferes with the RF pickup of the RFID tag to an extent sufficient 

for reading of RFID Tag 140 to be attenuated.” ‘458 Patent col. 16 ll. 54–58. On the other hand, 

“[w]hen the Clamshell ID 810 is open, the shielding is less close to RFID Tag 140 and, thus, the 

interference of the shielding is reduced and RFID Tag 140 can be read.” ‘458 Patent col. 17 ll. 4–

6.23.

The written descriptions of the ‘425, ‘458, and ‘777 Patents disclose that “shielding” 

“protect[s] . . . RFID tags from being read.” ‘425 Patent col. 5 ll. 19–20; see also col. 6 ll. 18–20 

(“These cases can also comprise RFID shielding to prevent the RFID tags . . . from being read 

without authorization”); col. 12 ll. 19–22 (same); ‘458 Patent col. 11, ll. 19–22 (same); ‘777 Patent 

col. 1, ll. 19–22 (same), col. 12 ll. 19–20 (same).24 Only when the “shield’ is separated from the 

 

23 This embodiment of “Clamshell ID 810” is also disclosed in the ‘425 and ‘777 Patents. 

‘425 Patent col. 10, l. 23; col. 11, l. 10; ‘777 Patent col. 16, l. 30–col. 17, l. 18. 

24 See, e.g., ‘425 Patent col. 5 l. 63–col. 6 l. 1 (“Incorporating RFID shielding into a wallet, 

purse, or other type of holder would prevent an RFID tag on an item within the holder from being 

read unless the item is deliberately exposed to the RFID reader, for instance, by removing the item 

from the holder.” (italics added)), col. 6 ll. 8–12, 18–20 (“Accordingly, providing RFID shielding 

for various carrying devices, such as purses, suitcases, book bags, briefcases, and satchels can 

prevent RFID tags in library books and other objects from being read without permission. . . . 

These cases can also comprise RFID shielding to prevent the RFID tags in the associated devices 

from being read without authorization.” (italics added)), col. 7 ll. 15–18 (“For example, a passport 

can include an RFID shielding material in the passport’s cover so that an RFID tag within the 

passport can only be read when the passport is opened.” (italics added)), col. 11 ll. 27–35 (“For 

example, in the case of a medical alert bracelet, the bracelet includes an RFID tag (having medical 

information) that is only readable when a cover element of the bracelet is opened to expose the 

RFID tag to an RFID tag reader. When the cover is opened medical person[ne]l can read data 

from the RFID tag. When the cover is closed the medical information is shielded from being read

by unauthorized persons and is thus kept confidential.” (italics added)), col. 14 ll. 5–12 (“As 

illustrated in FIG. 15, some embodiments of the invention include a method of allowing 

communication to an RFID tag. The method includes a Step 1510 of opening a front cover of an 

identification device, such as Clamshell ID 810 . . . , in order to make information included on the 

inside of the front cover visible, an RF shielding page being kept in proximity of the back cover 

such that an RF tag within the back cover is unreadable.” (italics added)); ‘458 Patent col. 11, l. 

66–col. 12, l. 2 (“Incorporating RFID shielding into a wallet, purse, or other type of holder would 

prevent an RFID tag on an item within the holder from being read unless the item is deliberately 

exposed to a RFID reader”), ‘col. 12, ll. 10–22 (similar), col. 13, ll. 17–20 (similar), col. 17, ll. 36–
30

“RFID tag” can the “RFID tag” be read. ‘425 Patent col. 5 ll. 20–27 (“In some embodiments, a 

person can allow information within an RFID tag to be read by removing the item from the holder, 

while in other embodiments the holder is merely opened or removed to allow the RFID tag to be 

read. Replacing the item within the holder, or closing the holder, secures the item’s RFID tag from 

unwanted readings from, or detection by, unknown or unauthorized RFID readers.”); see also ‘458 

Patent col. 11, ll. 22–29 (same); ‘777 Patent col. 11, ll. 22–29 (same). 

For these reasons, after reviewing the intrinsic evidence of the ‘425, ‘458, and ‘777 Patents, 

including the claims, the written descriptions, and the prosecution histories,

25 the court has 

determined that a person of ordinary skill in the art would understand the term “shield” to mean: 

To prevent the reading of a RFID tag.

Likewise, the court has determined that a person of ordinary skill in the art would 

understand the term “shielding” to mean: 

A material that prevents the reading of a RFID tag. 

4. “Switch Logic.” 

The parties have requested that the court construe the term “switch logic,” as recited in 

Claims 1, 11, 14, 29, 34, and 39 of the ‘156 Patent, each of which are independent. ECF No. 58–

1 Ex. B.

26

 

Claim 1 of the ‘156 Patent recites: 

1. A RFID tag comprising: 

an antenna configured to receive data in a first RF signal, to receive energy from 

the first RF signal, and to transmit data in a second RF signal, the transmission 

of the second RF signal being powered by the energy received from the first RF 

signal; and 

integrated circuitry including 

an input configured to receive data from the antenna and to receive power 

resulting from the energy received from the antenna, 

an output configured to provide the second RF signal to the antenna for 

transmission, 

 

43 (similar), col. 20 ll. 18–26 (similar); ‘777 Patent col. 11, l. 66–col. 12, l. 3 (similar), col. 12, ll. 

10–22 (similar), col. 13, ll. 17–20 (similar), col. 17, ll. 36–43 (similar), col. 20 ll. 18–26 (similar). 

25 The prosecution histories of the ‘425, ‘458, or ‘777 Patents did not include relevant 

information regarding the construction of the terms “shield” or “shielding.” 

26 “Switch logic” does not appear in the ‘458 Patent in Claim 6, but does appear in Claims 

7, 8, 18, and 19.
31

a state memory configured to store an ON/OFF state including two or more 

ON states of the RFID tag; 

a key memory configured for storing a key for changing the ON/OFF state 

stored in the state memory, and 

a switch logic configured to receive data from the input, to read the key 

from the key memory, to compare the received data with the read key, 

and to change the ON/OFF state stored in the state memory responsive 

to this comparison, the switch logic being further configured to 

determine whether or not to provide the second RF signal to the antenna 

for transmission, the determination being responsive to the ON/OFF 

state stored in the state memory. 

‘156 Patent col. 22 l. 56–col. 23 l. 13 (bold and italics added). 

In addition the term “switch logic” is recited in Claim 20, of which Claim 24 is dependent. 

Claim 20 of the ‘156 Patent recites:

20. A RFID tag comprising: 

a mechanical switch configured for selecting between two or more ON states of the 

RFID tag; 

an antenna configured to receive data in a first RF signal, to receive energy from 

the first RF signal, and to transmit data in a second RF signal; and 

integrated circuitry including 

an input configured to receive data from the antenna, 

an output configured to provide the second RF signal to the antenna for 

transmission, 

a state memory configured to store a state of the RFID tag, and 

a switch logic configured to receive data from the input, and to determine 

whether or not to provide the second RF signal to the antenna for 

transmission, the determination being responsive to the state stored in the 

state memory or the mechanical switch. 

‘156 Patent col. 24, ll. 45–61 (bold and italics added). 

a. Plaintiff’s Argument. 

Plaintiff argues that the term “switch logic” should be construed to mean “[s]oftware, 

hardware or firmware that can control a switch,” because “switch logic” “controls the state of 

switches in a RFID [t]ag.” 4/25/18 Pl. Br. at 15 (citing ‘156 Patent col. 3, ll. 15–21 (“Various 

embodiments of the invention include a remotely powered RFID (radio frequency identity) tag 

having an electronically controlled switch. This switch is optionally a remote (wirelessly) 

controlled switch); 55–62 (“[A] switch logic configured to receive data from the input, to read the 
32

key from the key memory, to compare the received data with the read key, and to change the 

ON/OFF state stored in the state memory responsive to this comparison, the switch logic is further 

configured to determine whether or not to provide a second RF signal to the antenna for 

transmission, the determination being responsive to the ON/OFF state stored in the state 

memory.”)). In other words, “[s]witch [l]ogic is used to receive data from the input, to read the 

key from the key memory, to compare the received data with the read key, and to change the 

ON/OFF state stored in the state memory [in response] to this comparison.” 4/25/18 Pl. Br. at 15. 

The Government’s argument that the term “switch logic” should be construed under 35 

U.S.C. § 112, ¶ 6

27 is incorrect. 4/25/18 Pl. Br. at 15–16. Since the word “means” is not present

in any of the aforementioned claims, as a matter of law, a “rebuttable presumption” arises that 35 

U.S.C. § 112, ¶ 6 is not applicable. 4/25/18 Pl. Br. at 15–16 (citing Williamson v. Citrix Online, 

LLC, 792 F.3d 1339, 1348 (Fed. Cir. 2015) (“[T]he failure to use the word ‘means’ . . . creates a 

rebuttable presumption . . . that § 112, para. 6 does not apply.”)). To rebut this presumption, the 

Government must establish, by a preponderance of evidence, that “the ‘claim term fails to recite 

sufficiently definite structure or else recites function without reciting sufficient structure for 

performing that function.’” 4/23/18 Pl. Br. at 16 (quoting Williamson, 792 F.3d at 1348). The 

Government, however, has not met that burden. 4/25/18 Pl. Br. at 16. 

First, “[‘s]witch [l]ogic[‘] does not appear in the claims as an isolated function without to 

specific structure;” instead, that term is “specifically described in those claims as part of the 

integrated circuitry within the RFID [t]ag.” 4/25/18 Pl. Br. at 16 (citing Finjan, Inc. v. Proofpoint, 

Inc., No. 13-cv-05808-HSG, 2015 WL 7770208, at *11 (N.D. Cal. Dec. 3, 2015) (holding that the 

means-plus-function limitation does not apply, where “the term does not require any construction 

beyond its plan and ordinary meaning,” since “the intrinsic evidence describes the term’s location 

and its interactions with other components”)). In addition, the written descriptions of the ‘156 and 

‘458 Patents “reinforce[] the presence of sufficient structure.” 4/25/18 Pl. Br. at 17 (citing ‘156 

Patent col. 20 ll. 11–14 (“Integrated Circuit 130 further includes Switch Logic 1860 configured to 

read the state stored in State Memory 1845 and, responsive to the read state, either transmit or not 

transmit an RF signal using Antenna 1810.”); ‘458 Patent col. 34 l. 60–63 (“Integrated Circuit 

3930 further includes Switch Logic 3960 configured as to reflect the state stored in State Memory 

 

27 35 U.S.C. § 112, ¶ 6 provides that 

[a]n element in a claim for a combination may be expressed as a means or step for 

performing a specified function without the recital of structure, material, or acts in 

support thereof, and such claim shall be construed to cover the corresponding 

structure, material, or acts described in the specification and equivalents thereof. 

35 U.S.C. § 112, ¶ 6. 

Pursuant to the Leahy-Smith America Invents Act (“AIA”), Pub. L. No. 112-29, 125 Stat. 

296 (2011), 35 U.S.C. § 112, ¶ 6 was renumbered as 35 U.S.C. § 112(f). But, because the ‘156, 

‘425, ‘458, and ‘777 Patents were filed, or are continuations of applications that were filed prior 

to March 16, 2013, pre-AIA 35 U.S.C. § 112 applies to the patents at issue in this case. See 

MANUAL OF PATENT EXAMINING PROCEDURE (“MPEP”) § 2159.01 (9th ed. 2015). 
33

3945 and, responsive to the read state, either to transmit or not to transmit an RF signal using 

Antenna 3910;” see also col. 35 l. 20–23 (“The Switch Logic 3960 can include software, hardware, 

and/or firmware.”)). The written descriptions in both [the ‘156 and ‘458 P]atents state that 

[‘s]witch [l]ogic[’] 1860 ‘can include software, hardware, and/or firmware.’” ‘156 Patent col. 20 

ll. 35–36; see also ‘458 Patent col. 35 ll. 20–21) (same). Accordingly, “[t]he construction of 

[‘s]witch [l]ogic[’] is not governed by 35 U.S.C. § 112, ¶ 6 and is not indefinite. 4/25/18 Pl. Br. 

at 19. 

b. The Government’s Argument. 

The Government argues that: (1) the term “switch logic” is governed by 35 U.S.C. § 112, 

¶ 6; and (2) and is indefinite, because the written descriptions of the ‘156 and ‘458 Patens do not 

identify sufficient corresponding structure. ECF No. 58–1 Ex. B. 

The first step in a 35 U.S.C. § 112, ¶ 6 analysis, “is to determine whether the claim term at 

issue would be understood by a person of ordinary skill in the art at the time of the alleged invention 

to have a ‘sufficiently definite meaning as the name for structure.’” 4/25/18 Govt. Br. at 13 

(quoting Williamson, 792 F.3d at 1349). But, Plaintiff “offered no such evidence here[,] because 

none exists. . . . Indeed, . . . the term ‘switch logic’ did not represent definite structure to one of 

ordinary skill in the art at the time of the alleged invention and still doesn’t.” 4/25/18 Govt. Br. at 

13. Nevertheless, Plaintiff argues “that ‘switch logic’ is ‘software, hardware or firmware that can 

control a switch.’” 4/25/18 Govt. Br. at 13. This, however, “doesn’t explain what ‘switch logic’ 

is, only what it ‘can include.’” 4/25/18 Govt. Br. at 14 (italics in original). As the United States 

Court of Appeals for the Federal Circuit has held, “the bare recitation that computer instructions 

can be software, hardware[,] or firmware is inadequate to render such a limitation structural[.]” 

4/25/18 Govt. Br. at 14 (citing Williamson, 792 F.3d at 1350 (“[T]he word ‘module’ does not 

provide any indication of structure because it sets forth the same black box recitation of structure 

for providing the same specified function as if the term ‘means’ had been used.”)). Accordingly, 

the term “switch logic” “is a nonce word devoid of structure that has been crafted to mean whatever 

Plaintiff[] need[s] it to mean.” 4/25/18 Govt. Br. at 14. 

Recently, the United States District Court for the District of Massachusetts’ in Egenera, 

Inc. v. Cisco Systems, Inc., No. 16-11613-RGS, 2018 WL 717342 (D. Mass. Feb. 5, 2018) 

determined that the term “logic,” as defined by plaintiff—“software, firmware, circuity or some 

combination thereof”—was “so broad and formless as to be ‘a generic “black box” for performing 

the recited computer-implemented functions.’” 4/25/18 Govt. Br. at 14 (quoting Egenera, 2018 

WL 717342, at *5–6). Accordingly, “a person of ordinary skill in the art . . . would not understand 

‘logic’” to refer to definite structure (such as circuitry) because the terms at issue ‘do not recite 

structural components, and each is described by a specific function.’” 4/25/18 Govt. Br. at 15 

(quoting Egenera, 2018 WL 717342, at *5). Like the Egenera plaintiff, in this case, Plaintiff has 

“chosen to construe [‘switch logic’] amorphously, as ‘software,’ ‘firmware,’ [‘]hardware[’], or 

some combination thereof.” 4/25/18 Govt. Br. at 15. “Switch logic,” however” is “a generic 

description for hardware or software that performs a specific function and is defined only by the

functions it performs.” 4/25/18 Govt. Br. at 15 (quotation marks, alternations, and citations 

omitted). 
34

Nor does the presence of the prefix ‘switch’ avoid the application of 35 U.S.C. § 112, ¶ 6, 

because “by proposing that ‘switch logic’ means ‘software, hardware or firmware that can control 

a switch,’ Plaintiff[] ha[s] effectively conceded that a special purpose computer or a specially 

programmed processor/computer is necessary to perform one or more of the recited functions.” 

4/25/18 Govt. Br. at 16–17. As a matter of law, however where special programming is required 

to perform the claimed function, the “mere recitation of a generic component (such as ‘logic’ or 

‘hardware’) for performing it/them does not constitute sufficient structure to avoid [35 U.S.C. §

112, ¶ 6]”. 4/25/18 Govt. Br. at 17 (citing Williamson, 792 F.3d at 1352 (“In cases . . . involving 

a claim limitation that is subject to § 112, para. 6 that must be implemented in a special purpose 

computer, this court has consistently required that the structure disclosed in the specification be 

more than simply a general purpose computer or microprocessor.”)). Therefore, “the term ‘switch 

logic’ should be construed as a means-plus-function limitation under [35 U.S.C. § 112, ¶ 6”. 

4/25/18 Govt. Br. at 17. 

Next, the court must determine “what structure, if any, disclosed in the specification 

corresponds to the claimed function.” 4/25/18 Govt. Br. at 17. “Where there are multiple claimed 

functions—as is the case here—the patentee must disclose ‘adequate corresponding structure to 

perform all of the claimed functions.’” 4/25/18 Govt. Br. at 17 (italics added) (quoting Williamson, 

792 F.3d at 1351–52). In addition, where “the claimed functions are to be carried out by a 

computer or microprocessor programmed to execute an algorithm, as is the case here, ‘the 

disclosed structure is not the general purpose computer, but rather the special purpose computer 

programmed to perform the . . . algorithm.’” 4/25/18 Govt. Br. at 17 (quoting WMS Gaming, Inc. 

v. Int’l Game Tech., 184 F.3d 1339, 1349 (Fed. Cir. 1999)). The written descriptions of the ‘156 

and ‘458 Patents, however, “provide no specific ‘software, hardware or firmware’—much less an 

algorithm—for performing any of the claimed functions.” 4/25/18 Govt. Br. at 18 (emphasis 

omitted). Therefore, the term “switch logic” is indefinite. 4/25/18 Govt. Br. at 19–20. 

c. Plaintiff’s Response. 

Plaintiff responds that the Government did not satisfy its burden to rebut the presumption 

that 35 U.S.C. § 112, ¶ 6 applies, because the claim’s recitation of structure, i.e., “integrated 

circuitry” that includes “switch logic” provides sufficient structure. 5/11/18 Pl. Resp. at 10. For 

example, “the claims explicitly describe the term ‘switch logic’ as a part of the claimed ‘integrated 

circuitry,’ and the specification refers to [‘]switch logic[’] as including ‘software, hardware, and/or 

firmware.’” 5/11/18 Pl. Resp. at 10 (citing ‘156 Patent col. 20 ll. 35–37). In addition, Egenera is 

inapplicable, because in that case the court decided that “the disputed term ‘logic’ did not refer to 

circuitry, here the claims themselves specifically describe the [‘]switch logic[’] as a part of the 

integrated circuitry.” 5/11/18 Pl. Resp. at 12. Moreover, other courts have held the term “logic”

to refer to “circuitry.” 5/11/18 Pl. Resp. at 12 (citing TecSec, Inc. v. Int’l Bus. Machs. Corp., 731 

F.3d 1336, 1348 (Fed. Cir. 2013) (construing the term “digital logic” as “digital circuits that 

perform Boolean algebra”); see also PCTEL, Inc. v. Agere Sys., Inc., 2005 WL 2206683, at *21–

22 (N.D. Cal. Sept. 8, 2005) (determining “‘logic’ [is] synonymous with circuitry” and “[a] review 

of the technical dictionaries supports [the] view that ‘logic,’ by itself, can connote structure”); St. 

Clair Intellectual Prop. Consultants, Inc. v. Canon, Inc., 2004 WL 1941340, at *20–21 (D. Del. 

Aug. 31, 2004) (determining that the term “logic means” described structure, because it “clearly 

refer[ed] to a logic circuit”)). 
35

Therefore, even if the court determines that 35 U.S.C. § 112, ¶ 6 applies, the asserted 

patents disclose sufficient structure for performing the claimed functions. 5/11/18 Pl. Resp. at 13. 

As a matter of law, “[t]he structure or algorithm of a means-plus-function claim term can rely on 

well-known techniques known to those of skill[] in the art.” 5/11/18 Pl. Resp. at 13 (quoting

Enfish, LLC v. Microsoft Corp., 822 F.3d 1327, 1340 (Fed. Cir. 2016) (“The fact that this algorithm 

relies, in part, on techniques known to a person of skill in the art does not render the composite 

algorithm insufficient under § 112 ¶ 6. Indeed, this is entirely consistent with the fact that the 

sufficiency of the structure is viewed through the lens of a person of skill in the art and without 

need to disclose structures well known in the art.”) (quotation marks omitted)). The bottom line

is the Government has “misconstrue[d] the claims’ and specification’s structure provided for the 

term ‘switch logic’” and fails to consider that “the claims list the specific algorithmic steps 

performed by the integrated circuit[.]” 5/11/18 Pl. Resp. at 13–14. Instead, “those skilled in the 

art would understand that the ‘156 Patent discloses sufficient structure and algorithmic support for 

each function performed by the switch logic of the integrated circuitry.” 5/11/18 Pl. Resp. at 14. 

d. The Government’s Response. 

The Government respond that “[t]he facts of Williamson are very similar to the facts of the 

present case. . . . Indeed, in both cases the claims use ‘a well-known nonce word that can operate 

as a substitute for ‘means’ in the context of [35 U.S.C. § 112, ¶ 6].’” 5/11/18 Govt. Resp. at 8 

(quoting Williamson, 792 F.3d at 1350). In addition, “both the ‘switch logic’ in the present case 

and the ‘distributed learning control module’ in Williamson are not described structurally but only 

in terms of the functions they perform.” 5/11/18 Govt. Resp. at 8 (italics in original). In this case,

the asserted patents merely provide that the “switch logic:” (1) is “part of the RFID tag;” and (2) 

‘can include software, hardware, and/or firmware.’ 5/11/18 Govt. Resp. at 9 (quoting ‘156 Patent 

col. 20 l. 36). But, “[e]ntirely missing from the disclosure of the asserted patents, is how the 

[recited] functions are to be performed and which ‘software, hardware and/or firmware’ should be 

used to perform them.” 5/11/18 Govt. Resp. at 9 (italics in original). Therefore, “the extent of 

disclosure provided by the Williamson patent far outstrips what the asserted patents provide” in 

this case. 5/11/18 Govt. Resp. at 10. As a result, “the claimed ‘switch logic’ can only be construed 

under [35 U.S.C. § 112, ¶ 6].” 5/11/18 Govt. Resp. at 10–11 (italics in original). In addition, 

“[l]ike the functions at issue in Williamson, those recited [in this case] ‘must be implemented in a 

special purpose computer, as Plaintiff[’s] construction . . . and the specification[s] . . . themselves 

indicate.” 5/11/18 Govt. Resp. at 11 (citing ‘156 Patent col. 20 ll. 35–36 (“The Switch Logic 1860

can include software, hardware, and/or firmware.”), col. 23 ll. 5–11 (“a switch logic configured to 

receive data from the input, to read the key from the key memory, to compare the received data 

with the read key, and to change the ON/OFF state stored in the state memory responsive to this 

comparison, the switch logic being further configured to determine whether or not to provide the 

second RF signal to the antenna for transmission”)). And, “like the specification of the Williamson

patent, the specifications of the asserted patents contain no algorithm whatsoever for performing 

any of the claimed functions.” 5/11/18 Govt. Resp. at 11. 

Plaintiff’s reliance on Finjan is also misplaced, because the patent in that case “contain[ed]

several detailed flow diagrams that indicate precisely how the claimed content processor interacts 

with the other components of the claimed invention, as well as several other highly detailed flow 

diagrams that explain how the content processor operates internally.” 5/11/18 Govt. Resp. at 12

(emphasis omitted). The patents asserted in this case, however, “contain no flow diagrams that
36

mention the ‘switch logic,’ much less explain its internal operation.” 5/11/18 Govt. Resp. at 12. 

Second, “far from merely indicating that the term-at-issue ‘can include software, hardware and/or 

firmware[,]’ the Finjan patent explain[ed] precisely which type of software the content processor

can be . . . and provide[d] exemplary source code and algorithms.” 5/11/18 Govt. Resp. at 12

(italics in original). Similarly, Plaintiff’s reliance on other federal district court cases is also 

misplaced. 5/11/18 Govt. Resp. at 13–15. 

In sum, “the patentee chose to use the nonce word ‘logic’ as part of a claim term, ‘switch 

logic,’ that has no established or understood meaning in the art as the name for structure. 

Moreover, the patentee chose to define that term in entirely functional terms.” 5/11/18 Govt. Resp. 

at 15. Finally, “the patentee has provided no disclosure indicating what a ‘switch logic’ is, 

indicating only that it ‘can include software, hardware, and/or firmware.’” 5/11/18 Govt. Resp. at 

15. 

e. The Court’s Resolution. 

i. 35 U.S.C. § 112, ¶ 6 Does Not Apply To The Term 

“Switch Logic.” 

Use of the term “means” in a claim element creates a rebuttable presumption that 35 

U.S.C. § 112, ¶ 6 applies. See Williamson, 792 F.3d at 1348. Conversely, the absence of the word

“means” creates a rebuttable presumption that 35 U.S.C. § 112, ¶ 6 does not apply. Id.; see also

Advanced Ground Info. Sys., Inc. v. Life360, Inc., 830 F.3d 1341, 1347 (Fed. Cir. 2016) (same).

The presumption, however, may be overcome by demonstrating that the claim term fails to 

“recite[] sufficiently definite structure” or else recites “function without reciting sufficient 

structure for performing that function.” Watts v. XL Sys. Inc., 232 F.3d 877, 880 (Fed. Cir. 2000). 

As the United States Court of Appeals for the Federal Circuit has held, the standard is “whether 

the words of the claim are understood by persons of ordinary skill in the art to have a sufficiently 

definite meaning as the name for structure.” Zeroclick, LLC v. Apple Inc., 891 F.3d 1003, 1007 

(Fed. Cir. 2018). 

In this case, none of claims at issue in the ‘156 and ‘458 Patents include the word “means”

nor does it appear together with the term “switch logic.” Therefore, a rebuttable presumption does 

not arise under 35 U.S.C. § 112, ¶ 6. Id. The Government is correct that the United States Court 

of Appeals for the Federal Circuit has held that “nonce words” such as “device,” “element,” 

“generator,” “mechanism,” and “module” are non-structural generic placeholders that may invoke 

35 U.S.C. § 112, ¶ 6.28 But, our appellate court repeatedly has held that when the term “logic” is 

 

28 See, e.g., Advanced Ground Info. Sys., Inc., 830 F.3d at 1347–48 (“The term ‘symbol 

generator’ invokes the application of § 112, ¶ 6[,] because it fails to describe a sufficient structure 

and otherwise recites abstract elements ‘for’ causing actions . . . or elements ‘that can’ perform 

functions[.]” (citations omitted)); Media Rights Techs., Inc. v. Capital One Fin. Corp., 800 F.3d 

1366, 1373 (Fed. Cir. 2015) (“We have never found that the term ‘mechanism’—without more—

connotes an identifiable structure; certainly, merely adding the modifier ‘compliance’ to that term 

would not do so either.”); Williamson, 792 F.3d at 1350 (“‘Module’ is a well-known nonce word 

that can operate as a substitute for ‘means’ in the context of § 112, para. 6 . . . . Generic terms such 

as ‘mechanism,’ ‘element,’ ‘device,’ and other nonce words that reflect nothing more than verbal 
37

accompanied by a modifier, that “designates structure to skilled artisans.” TecSec, Inc., 731 F.3d 

at 1348 (“[T]he term ‘digital logic’ designates structure to skilled artisans—namely digital circuits 

that perform Boolean algebra.”); see also Apex Inc. v. Raritan Computer, Inc., 325 F.3d 1364, 

1373 (Fed. Cir. 2003) (“While we do not find it necessary to hold that the term ‘circuit’ by itself 

always connotes sufficient structure, the term ‘circuit’ with an appropriate identifier such as . . . 

‘logic,’certainly identifies some structural meaning to one of ordinary skill in the art.”); 

Intel Corp v. VIA Techs., 319 F.3d 1357, 1366 (Fed. Cir. 2003) (holding that generic “core logic” 

was adequate corresponding structure for a claimed function although there was no specific 

circuitry disclosed to show how the “core logic” was modified). 

Therefore, Section 112, ¶ 6 does not apply if a person of ordinary skill in the art, having 

read the specification, understands the term to be the name of the structure that performs the 

function, even if the term covers a broad class of structures or identifies the structures by their 

function. See Apex Inc., 325 F.3d at 1372 (“To help determine whether a claim term recites 

sufficient structure, we examine whether it has an understood meaning in the art. As an aid in 

making this determination, this court inquires into whether the term, as the name for the structure, 

has a reasonably well understood meaning in the art[.]” (quotation marks and citations omitted)); 

see also Greenberg v. Ethicon Endo-Surgery, Inc., 91 F.3d 1580, 1583 (Fed. Cir. 1996) (“Many 

devices take their names from the functions they perform.”). For this reason, in this case no 

additional word is required to denote a specific structure or a precise physical structure to avoid 

the application of 35 U.S.C. § 112, ¶ 6. See Watts, 232 F.3d at 880–81. 

 

constructs may be used in a claim in a manner that is tantamount to using the word ‘means’ because 

they ‘typically do not connote sufficiently definite structure’ and therefore may invoke § 112, para. 

6.’”); Robert Bosch, LLC v. Snap-On Inc., 769 F.3d 1094, 1098 (Fed. Cir. 2014) (holding that the 

terms “program recognition device” and “program loading device” were means-plus-function 

limitations where the specification did not disclose any structure for the “devices” but only the 

functions that the devices performed); Welker Bearing Co., v. PHD, Inc., 550 F.3d 1090, 1096 

(Fed. Cir. 2008) (holding that the term “mechanism for” was a means-plus-function limitation 

despite the absence of the word “means,” since the claim did not recite any structure that performed 

the recited function and the generic reference to “mechanism” did not connote specific structure); 

Mass. Inst. of Tech. v. Abacus Software, 462 F.3d 1344, 1354 (Fed. Cir. 2006) (holding that the 

term “mechanism for” was a means-plus-function limitation even though term “means” was not 

recited, since the term “colorant selection mechanism” appeared to have been used synonymously 

with “means” and the claim did not recite additional details to know what structure formed the 

“mechanism”); Toro Co. v. Deere & Co., 355 F.3d 1313, 1325 (Fed. Cir. 2004) (holding that the 

term “‘control mechanism,’ like the [term] ‘control means’ . . . is subject to § 112 ¶ 6”); see also

MPEP § 2181(I)(a) (“The following is a list of non-structural generic placeholders that may invoke 

35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, paragraph 6: ‘mechanism for,’ ‘module for,’ ‘device 

for,’ ‘unit for,’ ‘component for,’ ‘element for,’ ‘member for,’ ‘apparatus for,’ ‘machine for,’ or 

‘system for.’”). 

This list is not exhaustive and other generic placeholders may invoke 35 U.S.C. § 112, ¶ 6, 

but the term “switch logic” is not on the list of generic placeholders. 
38

The written descriptions of the ‘156 and ‘458 Patents disclose that “switch logic” can

include “software,[29]hardware,[30]and/or firmware.”

31

‘156 Patent col. 20 ll. 35–36 (“The Switch

Logic 1860 can include software, hardware, and/or firmware.”); ‘458 Patent col. 35 ll. 20–21 

(same). “Switch logic” also can be incorporated as a component of “hardware,” i.e., as “firmware,”

or as a separate component(s), i.e., as “software.” For example, several embodiments use the term 

“switch logic” to include “firmware,” e.g., Claims 1, 14, 20, 29, 34, and 39 of ‘156 Patent, where

the term “integrated circuitry,” i.e., “hardware” includes “switch logic” and the written 

descriptions of the ‘156 and ‘458 Patents disclose “switch logic” as a component of an “integrated 

circuit.”32 ‘156 Patent col. 20 l. 11 (“Integrated Circuit 130 . . . includes Switch Logic 1860[.]”), 

col. 22 l. 62, col. 23 l. 5 (same), col. 24 ll. 9, 21 (same), 51, 57 (same), col. 25 ll. 30, 35 (same), 

col. 25 l. 59, 65 (same), col. 26 ll. 26, 32 (same); ‘458 Patent col. 34 ll. 60–61 (“Integrated Circuit 

3930 . . . includes Switch Logic 3960[.]”). In addition, other embodiments use the term “switch 

logic” to include “software,” where the written descriptions disclose that the “software” may be 

executed by the “integrated circuit,” i.e., the “hardware.” ‘156 Patent col. 22 ll. 9–10 (“The steps 

shown in FIGS. 19 and 20 are optionally performed using Integrated Circuit 1830 of FIG. 18.”), 

col. 23 ll. 46–56 (integrated circuitry including . . . switch logic), col. 24 ll. 9, 21 (same), 51, 57

 

29 The Authoritative Dictionary of IEEE Standard Terms defines “software” as “[c]omputer 

programs, procedures, and possibly associated documentation and data pertaining to the operation 

of a computer system.” INST. OF ELEC. AND ELECS. ENG’RS, THE AUTHORITATIVE DICTIONARY OF 

IEEE STANDARD TERMS 1067 (7th ed. 2000); see also Software, WEBSTER’S NEW WORLD 

COLLEGE DICTIONARY (5th ed. 2016) (defining “software” as “the programs, routines, etc. for a 

computer or computer system”). 

30 The Authoritative Dictionary of IEEE Standard Terms defines “hardware” as “[p]hysical 

equipment used to process, store, or transmit computer programs or data.” INST. OF ELEC. AND 

ELECS. ENG’RS, THE AUTHORITATIVE DICTIONARY OF IEEE STANDARD TERMS 504 (7th ed. 2000); 

see also Hardware, WEBSTER’S NEW WORLD COLLEGE DICTIONARY (5th ed. 2016) (defining 

“hardware” as “the mechanical, magnetic, and electronic design, structure, and devices of a 

computer or computer system or of other electronic equipment”). 

31 The Authoritative Dictionary of IEEE Standard Terms defines “firmware” as “[t]he 

combination of a hardware device and computer instructions and data that reside as read-only 

software on that device.” INST. OF ELECTRICAL AND ELECTRONICS ENG’RS, THE AUTHORITATIVE 

DICTIONARY OF IEEE STANDARD TERMS 438 (7th ed. 2000); see also Firmware, WEBSTER’S NEW 

WORLD COLLEGE DICTIONARY (5th ed. 2016) (defining “firmware” as “a computer program stored 

on a ROM chip”). 

32 The Authoritative Dictionary of IEEE Standard Terms defines “integrated circuit” as a 

“combination of interconnected circuit elements inseparably associated on or within a continuous 

substrate.” INST. OF ELEC. AND ELECS. ENG’RS, THE AUTHORITATIVE DICTIONARY OF IEEE

STANDARD TERMS 570 (7th ed. 2000); see also Integrated Circuit, WEBSTER’S NEW WORLD 

COLLEGE DICTIONARY (5th ed. 2016) (defining “integrated circuit” as “an electronic circuit 

containing many interconnected amplifying devices and circuit elements formed on a single body, 

or chip, of semiconductor material”). 
39

(same) ‘458 Patent col. 36 ll. 62–63 (“The steps shown in FIGS. 40 and 41 are optionally

performed using Integrated Circuit 3930 of FIG. 39.”). 

Either “firmware” or “software” instructs the “hardware,” i.e., the “integrated circuit,” to 

perform the recited functions, e.g., “to receive data from the input, to read the key from the key 

memory, to compare the received data with the read key, and to change the ON/OFF state,” the 

switch logic being further configured “to determine whether or not to provide the second RF signal 

to the antenna for transmission.” ‘156 Patent col. 23 ll. 5–11. Accordingly, one of ordinary skill 

in the art, having read the written descriptions of the ‘156 and ‘458 Patents, would understand the 

term “switch logic” as part of the integrated circuitry. Likewise, “logic” is understood as a 

“[g]eneral term for the various types of gates, flip-flops, and other on/off circuits used to perform 

problem-solving functions in a digital computer.” See Logic, MCGRAW-HILL DICTIONARY OF SCI.

AND TECH. TERMS (6th ed. 2002) (italics added); see also Linear Tech. Corp. v. Impala Linear 

Corp., 379 F.3d 1311, 1320 (Fed. Cir. 2004) (“Technical dictionaries, which are evidence of the 

understandings of persons of skill in the technical arts, plainly indicate that the term ‘circuit’

connotes structure.”); Apex Inc., 325 F.3d at 1373 (“While we do not find it necessary to hold that 

the term ‘circuit’ by itself always connotes sufficient structure, the term ‘circuit’ with an 

appropriate identifier such as ‘interface,’ ‘programming’ and ‘logic,’ certainly identifies some 

structural meaning to one of ordinary skill in the art.”).

Therefore, the court has determined that one of ordinary skill in the art, reading the written 

descriptions of the ‘156 and ‘458 Patents, would understand the term “switch logic” to mean a part 

of integrated circuitry. 

ii. The Construction Of The Term “Switch Logic.” 

Claim 1 of the ‘156 Patent recites 

a switch logic configured to receive data from the input, to read the key from the 

key memory, to compare the received data with the read key, and to change the 

ON/OFF state stored in the state memory responsive to this comparison, the switch 

logic being further configured to determine whether or not to provide the second 

RF signal to the antenna for transmission, the determination being responsive to 

the ON/OFF state stored in the state memory. 

‘156 Patent col. 23 ll. 5–13 (Claim 1) (italics added); see also ‘156 Patent col. 23 ll. 56–64 (same)

(Claim 11), col. 24 ll. 21–29 (same) (Claim 14).

Similarly, Claim 20 of the ‘156 Patent recites “a switch logic configured to receive data 

from the input, and to determine whether or not to provide the second RF signal to the antenna for 

transmission, the determination being responsive to the state stored in the state memory or the 

mechanical switch.” ‘156 Patent col. 24 ll. 57–61 (italics added); see also ‘156 Patent col. 25 ll. 

36–40 (Claim 29), col. 25 l. 65–col. 26 l. 6 (Claim 34), col. 26 ll. 33–36 (Claim 39). Likewise, 

Claim 24 of the ‘156 Patent, that depends from Claim 20, recites “the switch logic being further 

configured to read the key from the key memory, to compare the received data with the read key, 

and to change the state stored in the state memory responsive to the comparison between the 
40

received data with the read key.” ‘156 Patent col. 25 ll. 7–11 (italics added). In addition, Claims 

6–8, 18, and 19 of the ‘458 Patent recite similar limitations. ‘458 Patent col. 38, ll. 16–25, 47–54. 

The claims of the ‘156 and ‘458 Patents instruct that “switch logic” controls data 

transmission from the “RFID tag,” i.e., by changing the “ON/OFF state” and determining whether 

to provide the “second RF signal” for transmission. The written descriptions of the ‘156 and ‘458 

Patents support this construction. For example, the ‘156 Patent discloses that

Integrated Circuit 130 further includes Switch Logic 1860 configured to read the 

state stored in State Memory 1845 and, responsive to the read state, either transmit 

or not transmit an RF signal using Antenna 1810. . . . In some embodiments, Switch 

Logic 1860 is configured to read the state stored in State Memory 1845 and, 

responsive to the read state, transmit one of a plurality of alternative data stored in 

Data Memory 1850. In some embodiments, Switch Logic 1860 is configured to 

read the state stored in State Memory 1845 and, responsive to the read state, 

transmit different amounts of data stored in Data Memory 1850.

In some embodiments, Switch Logic 1860 is configured to receive data through 

Antenna 1810, to read a key from Key Memory 1855, to compare the received data 

with the read key, and to change the state stored in State Memory 1845 responsive 

to this comparison. For example, in some embodiments, if the read key matches 

the received data, the state of the RFID Tag 1800 is set to ON, or changed from one 

ON state to another ON state. 

‘156 Patent col. 20 ll. 11–33; see also ‘458 Patent col. 34 l. 60–col. 35 l. 16. 

Contrary to Plaintiff’s proposed construction, the ‘156 and ‘458 Patents do not disclose 

that the “switch logic” controls a “switch.” Instead, the written descriptions provide that a “switch” 

is “activated by a magnetic field, an electric field, a wireless signal, light, heat, mechanical force, 

and/or an electronic circuit external to [a] Switchable RFID Device.” ‘156 Patent col. 8 ll. 7–10; 

see also ‘458 Patent col. 22 ll. 31–34 (same). In addition, the written description of the ‘156 Patent 

discloses that

Switch Logic 1860 is configured for turning ON and OFF operation of RFID Tag 

1800, while Switch 170 is configured to select between alternative ON states. In 

an alternative embodiment, Switch 170 is configured for turning ON and OFF 

operation of RFID Tag 1800 and Switch Logic 1860 is configured for selecting 

between alternative ON states. In some embodiments, proper activation of both 

Switch 170 and Switch Logic 1860 is required to turn RFID Tag 1800 to an ON 

state. Thus, in order for RFID Tag 1800 to transmit certain information, or to 

transmit at all, Switch 170 must be activated by a person and Switch Logic 1860

must receive a proper key from an RF reader. This provides a dual layer of 

mechanical and key based security. 

‘156 Patent col. 20 ll. 53–66 (italics added); see also ‘458 Patent col. 35 ll. 38–51. 

The claims of the ‘156 and ‘458 Patents also do not recite that the “switch logic” controls 

a “switch.” Instead, consistent with the written descriptions of the ‘156 and ‘458 Patents, Claim 
41

20 of the ‘156 Patent recites a “mechanical switch configured for selecting between two or more 

ON states of the RFID tag.” ‘156 Patent col. 24 ll. 46–47 (italics added); see also ‘156 Patent col. 

25 ll. 25–26 (“a mechanical switch configured to set a state of the RFID tag stored in a state 

memory”). 

For these reasons, after reviewing the intrinsic evidence of the ‘156 and ‘458 Patents, 

including the claims, the written descriptions, and prosecution histories,

33 the court has determined 

that a person of ordinary skill in the art would understand the term “switch logic” to mean: 

Circuitry and set or sets of logic instructions directing the operation of a RFID tag. 

V. CONCLUSION.

For the reasons discussed herein, the court has determined that the disputed claims are to 

be construed, pursuant to this Memorandum Opinion And Order Construing Certain Claims of 

United States Patent Nos. 7,719,425; 7,924,156; 9,524,458; 9,569,777. In addition, Steven M. 

Colby is dismissed as a Plaintiff, as he does not have standing to seek an adjudication in this case. 

IT IS SO ORDERED.

s/ Susan G. Braden

SUSAN G. BRADEN

Senior Judge

 

33 The prosecution histories of the ‘156 or ‘458 Patents did not include relevant information 

regarding the construction of the term “switch logic.”