United States Court of Appeals for the Federal Circuit 

2005-1398 

NOURI E. HAKIM, 

Plaintiff-Appellant, 

v. 

CANNON AVENT GROUP, PLC, CANNON RUBBER LIMITED 

and AVENT AMERICA, INC., 

Defendants-Appellees. 

Morris E. Cohen, of Brooklyn, New York, argued for plaintiff-appellant. With him 

on the brief was Eric W. Buether, Goodwin Gruber, LLP, of Dallas, Texas . Of counsel 

was Brian M. Koide, Crowell & Moring, LLP, of Washington DC. 

Joseph A. Calvaruso, Chadbourne & Parke LLP, of New York, New York, argued 

for defendants-appellees. With him on the brief were Kenneth S. Weitzman and 

Richard Martinelli. 

Appealed from: United States District Court for the Western District of Louisiana 

Judge Robert G. James 
United States Court of Appeals for the Federal Circuit

 2005-1398 

NOURI E. HAKIM, 

Plaintiff-Appellant, 

 v. 

CANNON AVENT GROUP, PLC, CANNON RUBBER LIMITED 

and AVENT AMERICA, INC., 

Defendants-Appellees. 

 __________________________ 

DECIDED: February 23, 2007 

__________________________ 

Before MICHEL, Chief Judge, NEWMAN and RADER, Circuit Judges. 

NEWMAN, Circuit Judge. 

Mr. Nouri E. Hakim sued Cannon Avent Group, PLC, Cannon Rubber Limited, and 

Avent America, Inc. (together "Avent") in the United States District Court for the Western 

District of Louisiana, asserting infringement of Hakim's United States Patents No. 

6,321,931 (the '931 patent) and No. 6,357,620 (the '620 patent), by Avent's leak-resistant 
2005-1398 2

 

drinking cups. The district court granted Avent's motions for summary judgment that the 

'931 patent is not infringed and the '620 patent is invalid.1

 We affirm these judgments. 

THE '931 PATENT 

The Hakim inventions are for drinking cups that prevent the spilling of liquid if the 

cup is tipped over. Hakim's patented cups have a valve through which fluid can pass when 

suction is applied by a person by way of a drinking spout, whereby the valve closes to seal 

the cup when a person is not drinking. The specification of the '931 patent describes the 

preferred embodiment as having a dual sealing mechanism that provides an "extremely 

secure seal" against spillage: 

In accordance with the invention, an improved cup construction and valve 

assembly is provided which provides an extremely secure seal against 

accidental liquid flow from the cup spout. Further to the invention, a user 

places his or her mouth against the spout of the cup assembly to suck liquid 

out of the cup when desired. The act of sucking at the spout of the cup 

creates negative pressure or a partial vacuum against a valve in the cup 

spout, causing the valve to invert, or turn inside out, either partially or totally, 

thereby unblocking an opening such as an orifice or slit in the valve. Once the 

opening is unblocked, liquid can flow freely through the valve and spout. 

In contrast, when not in use, the valve sits in a resting, closed position, with 

the valve pressed against the center seal-off, thereby sealing off the opening 

or slit in the valve assembly. Thus, in its relaxed state, with no negative 

pressure applied, the valve sits in a closed position with the fluid opening 

sealed by the center seal-off. Moreover, in accordance with the dual valve 

nature of the device in the preferred embodiment, an adjacent valve similarly 

seals when no negative pressure is applied, thereby blocking off the air vents 

in the cover of the cup, and further preventing the possibility of fluid flow. 

Consequently, the closed position provides an extremely secure seal against 

fluid leakage, such that inadvertent spills or even deliberate attempts to force 

liquid outside of the cup, such as by turning the cup upside down, or shaking 

the cup, are ineffective. 

1 Hakim v. Cannon Avent Group, PLC, No. 3-02-1371, 2005 WL 1793760 

(W.D. LA May 3, 2005) (the '931 patent) ("Hakim I"); Hakim v. Cannon Avent Group, PLC, 

No. 3-02-1371, 2005 WL 1793765 (W.D. LA May 3, 2005) (the '620 patent) ("Hakim II"). 
2005-1398 3

'931 Patent, col. 1, line 51 to col. 2, line 10. 

During patent prosecution Hakim described his distinctions from the cited references 

as follows: 

Thus two separate mechanisms are both used to close off the passage of 

liquid through the valve when not in use. The first mechanism involves an 

inverting, flexible valve material which has a slit therein and responds to 

suction. The second mechanism involves the use of a blocking element, 

which is impenetrable to the passage of liquid. The slit sits against the 

blocking element, sealing or blocking off the slit, to yet further prevent the 

passage of liquid through the valve. 

. . . . By providing both the elastomeric member with a slit and a blocking 

element, a sealing mechanism is provided which reduces spillage beyond 

that of either mechanism alone. None of the references cited in the Office 

Action [Robbins III, Bachman, and Belcastro] teach or suggest such a no-spill 

mechanism having a slit sitting against a blocking element such as is recited 

in all of the pending claims. 

'931 Application Response, Oct. 2, 2000 (emphases added). Thus during prosecution the 

presence of the slit in the flexible valve material was emphasized as distinguishing all of the 

claims from the cited references. 

Avent's accused drinking cup has a valve with a flexible diaphragm having a central 

opening, but the opening is not a slit that opens and closes, but simply a hole in the 

diaphragm. The diaphragm rests against a plastic mount that has a conical head that seals 

the hole. Upon suction by a person seeking to drink, the diaphragm is lifted off the conical 

head, exposing the hole and permitting fluid to flow from the cup to the drinking spout. 

The district court held on summary judgment that Avent's device did not infringe the 

'931 claims, based on the claim construction that limited the '931 claims to a sealing 

mechanism that includes a flexible valve material or diaphragm having a slit. Hakim I at *1 

("For the reasons contained in the Report and Recommendation of the Magistrate Judge 
2005-1398 4

previously filed herein, and after a de novo review of the entire record and the written 

objections filed herein, and concurring with the Magistrate Judge's findings under the 

applicable law”; summary judgment was granted.) Mr. Hakim argues that the claim 

construction is excessively constricted and that all of the '931 claims do not require a slit 

that opens and closes with pressure, for claims 1 and 2 use the word "opening," not "slit," 

for the aperture in the diaphragm. Claim 1 is as follows: 

1. An apparatus for use in a no-spill drinking cup, said apparatus comprising: 

a valve holder, such valve holder comprising at least one valve and a 

blocking element, said valve comprising a flexible material, said blocking 

element comprising an area of material which is impenetrable to the flow of 

liquid, said valve further comprising an opening through said flexible material, 

said valve having a resting position wherein said flexible material sits with 

said opening against said blocking element such that said valve is closed to 

the passage of liquid through said valve, said valve moving into an open 

position for the passage of liquid through said valve upon the application of 

negative air pressure to the top of said valve, said open position being a 

position wherein said flexible member comprising said opening lifts off of said 

blocking element. 

(Emphasis added.) The word "opening" was placed in claims 1 and 2 when Hakim filed a 

continuation application after receiving a notice of allowance for claims wherein the word 

"slit" appeared instead of "opening." The filing of the continuation was accompanied by an 

attorney letter stating that Hakim was broadening claims 1 and 2, and an amendment 

changing "slit" to "opening" in claims 1 and 2. The continuation claims were allowed 

without any comment or rejection by the examiner. However, in construing the claims of 

the continuation patent, the district court held Hakim to his arguments in the parent 

application that the invention includes the presence of a slit in the flexible material. The 

court stated: "Because Hakim did not retract any of his arguments distinguishing the prior 
2005-1398 5

art, he is held to the restrictive claim construction he argued during prosecution of the 

patent." Hakim I at *5 (adopted Magistrate's Report). 

Hakim argues that the district court improperly relied on the argument in the 

abandoned parent application. Hakim states that by re-filing the application with broader 

claims, he avoided any unnecessary restriction that may have crept into the prior 

prosecution. He states that he informed the examiner that the new claims were broader 

than those previously allowed, and that when the examiner allowed the new claims without 

rejection, there is a presumption that the examiner had assured himself of the patentability 

of the new claims. See United States v. Chemical Foundation, 272 U.S. 1, 14-15 (1926) 

("The presumption of regularity supports the official acts of public officers, and, in the 

absence of clear evidence to the contrary, courts presume that they have properly 

discharged their official duties.") Hakim states that he did what was appropriate when he 

flagged this change to assist the examiner, and that the claims as granted should not be 

unnecessarily narrowed by the court. 

Avent states that the totality of the prosecution history nonetheless limits Hakim to 

the embodiment with the slit, for the magistrate judge found: "The prosecution history 

makes perfectly clear that Hakim specifically distinguished his invention from the prior art 

by limiting it to an apparatus with both (1) a slit which closes when suction is not applied, 

and (2) a second closure consisting of a blocking element which the slit rests against." 

Hakim I at *5 (adopted Magistrate's Report). Avent states that this was and is the 

distinction from the prior art, and that the claims are properly limited to this feature whether 

they use the word "slit" or the word "opening." Avent stresses that when Hakim wrote to 

the examiner that he was broadening the claims, he did not specifically point out that he no 
2005-1398 6

longer intended to be limited to the specific mechanism that he had previously argued was 

the distinguishing feature of his invention. 

Hakim points out that a patent applicant is not precluded from filing a continuation 

application with broader claims. It is recognized that an applicant can broaden as well as 

restrict his claims during the procedures of patent examination, and that continuing 

applications may present broader claims than were allowed in the parent. Cf. Symbol 

Technologies, Inc. v. Lemelson Medical, Education & Research Found., 422 F.3d 1378, 

1385 (Fed. Cir. 2005) ("Commonly, and justifiably, one might refile an application to add 

subject matter in order to attempt to support broader claims as the development of an 

invention progresses, although entitlement to an earlier filing date for any claimed subject 

matter may of course be necessary to avoid a statutory bar created by intervening events 

outlined in 35 U.S.C. §§ 102 and 103."). 

Hakim had the right to refile the application and attempt to broaden the claims. See

id. at 1385 ("One may also refile an application even in the absence of any of these 

reasons [refiling an application in response to a requirement for restriction; refiling in order 

to present evidence that may not have previously existed; or refiling to support broader 

claims as the development of an invention progresses], provided that such refiling is not 

unduly successive or repetitive.") However, an applicant cannot recapture claim scope that 

was surrendered or disclaimed. The district court did not err in holding that the examiner's 

action in allowing the continuation claims without further prosecution was based on the 

prosecution argument in the parent. See Omega Engineering, Inc. v Raytek Corp., 334 

F.3d 1314, 1324 (Fed. Cir. 2003) ("The doctrine of prosecution disclaimer is well 

established in Supreme Court precedent, precluding patentees from recapturing through 
2005-1398 7

claim interpretation specific meanings disclaimed during prosecution.") (citing 

Schriber-Schroth Co. v. Cleveland Trust Co., 311 U.S. 211, 220-21 (1940), Crawford v. 

Heysinger, 123 U.S. 589, 602-04 (1887), and Goodyear Dental Vulcanite Co. v. Davis, 102 

U.S. 222, 227 (1880)). Although a disclaimer made during prosecution can be rescinded, 

permitting recapture of the disclaimed scope, the prosecution history must be sufficiently 

clear to inform the examiner that the previous disclaimer, and the prior art that it was made 

to avoid, may need to be re-visited. See Springs Window Fashions LP v. Novo Indus., 

L.P., 323 F.3d 989, 995 (Fed. Cir. 2003) ("The public notice function of a patent and its 

prosecution history requires that a patentee be held to what he declares during the 

prosecution of his patent. A patentee may not state during prosecution that the claims do 

not cover a particular device and then change position and later sue a party who makes 

that same device for infringement."). 

The district court correctly ruled that the word "opening" is not correctly construed to 

eliminate the sealing mechanism provided by the slitted diaphragm. On this construction, 

the summary judgment of noninfringement of the '931 patent was correct, and is affirmed. 

THE '620 PATENT 

The '620 patent also describes a valve containing a diaphragm with an opening, but 

the opening surrounds a conical post protruding from the surface of the blocking element; 

when suction is applied to the spout of the cup, the diaphragm is lifted off of the blocking 

element, permitting fluid to flow through the opening. Hakim describes this invention as 

follows: 

In the preferred embodiment, the application of negative pressure to the top 

of the valve causes an opening in a portion of the valve to move up off of the 
2005-1398 8

base of a protruding member extending through that opening. Once the 

opening is unblocked, liquid can flow freely through the valve and spout. 

In contrast, when not in use, the valve sits in a resting, closed position, with 

the opening pressed against the center seal-off, thereby sealing off the 

opening, slit or orifice in the valve assembly. Thus, in its relaxed state, with 

no negative pressure applied, the valve sits in a closed position with the fluid 

opening sealed by the center seal-off. In the preferred embodiment, the 

protruding member extends through the opening in a male to female 

relationship such that the orifice sits tightly on the protruding member against 

the protruding member's bottom portion and the center seal-off or sealing 

member's base. 

'620 Patent, col. 1, line 51 to col. 2, line 9. 

The district court granted summary judgment that the claims of the '620 patent are 

invalid based on anticipation by Italian Patent No. 594286 (the IT '286 patent). The IT '286 

patent was not before the United States examiner, whereupon the district court analyzed 

the reference to determine its relevance and effect. 

A

Hakim argues that the district court erred in invalidating the '620 patent without first 

construing the claims, citing Amazon.com, Inc. v. BarnesandNoble.com, Inc., 239 F.3d 

1343 (Fed. Cir. 2001) for the proposition that an invalidity analysis begins with the 

construction of the claims. 

Claim construction is directed to claims or claim terms whose meaning is disputed as 

applied to the patentee's invention in the context of the accused device. When there is no 

dispute as to the meaning of a term that could affect the disputed issues of the litigation, 

"construction" may not be necessary. We are not told what alternative meanings are 

sought for terms that might affect validity of the claim, or how claim "construction" would 
2005-1398 9

affect the issue of anticipation by the Italian patent. Hakim's methodological challenge is 

without substance. 

B

"Anticipation" means that the claimed invention was previously known, and that all of 

the elements and limitations of the claim are described in a single prior art reference. See

Akzo N.V. v. U.S. Int'l Trade Comm'n, 808 F.2d 1471, 1479 (Fed. Cir. 1986) ("Under 35 

U.S.C. § 102, anticipation requires that each and every element of the claimed invention be 

disclosed in a prior art reference.") The magistrate judge found that the drinking cup 

described in the IT '286 reference and the drinking cup in the '620 patent "are substantially 

identical in all material respects," explaining: 

Both inventions have a flexible valve member or diaphragm, a base and a 

protruding member or post, called a peduncle in the IT '286 patent. The post 

extends through a hole in the valve member and, when at rest in its closed 

position, the valve member sits tightly around the lower portion of the post in 

both inventions. When a child sucks on the spout, the valve member moves 

up the post which allows liquid to flow through the hole in the valve member. 

Both the '620 and the '286 patented apparatuses operate in this manner. 

Hakim II, at *4. 

Hakim argues that the district court erred in deciding the factual issue of anticipation 

adversely on summary judgment; specifically, the question of whether the IT '286 reference 

describes a "closed position." Hakim points out that each claim of his '620 patent requires 

a closed position in which the valve blocks the passage of liquid, and that the IT '286 

reference describes a valve that "produces hermetic sealing," i.e. that blocks the passage 

of air. Hakim argues that a valve can be tight enough to block the passage of air but not 

strong enough to block the passage of liquid, and that it cannot be assumed that when the 

IT '286 valve is closed it blocks the passage of liquid. 
2005-1398 10

The district court rejected this argument, pointing to the IT '286 statement that its 

purpose is to prevent liquid from flowing when suction is not applied, that is, to block the 

passage of liquid in the closed position. We discern no error in the district court's analysis 

of the description of the device shown in the IT '286 or the operation of the valve structure. 

 We agree with the district court that no reasonable jury could find other than that all of the 

limitations of the '620 claims are present in the IT '286 device, thereby anticipating the '620 

invention. 

C

Mr. Hakim also argues that the district court erred in failing to analyze anticipation on 

a claim-by-claim basis. In particular, Hakim argues that the court ignored the limitation of 

claim 12 that the flexible valve "begins to invert upon the application of negative pressure." 

It is correct that each claim must be considered separately, and that the limitations in 

subordinate claims are relevant to determination of anticipation of those claims by a single 

reference. However, the district court did discuss the aspect of when the valve begins to 

invert: 

Finally, Hakim argues that unlike the IT '286 device his device requires that 

the flexible member "invert" or "begin to invert" and he embarks on 

semantical gymnastics to create a distinction in the two devices. This is not, 

as they say, rocket science; both of these extremely simple devices are 

made so that, when a child sucks on the spout, the flexible member flexes up 

on the post, breaking the seal, and allowing the flow of liquid. It matters not 

whether this movement is called inverting, "beginning to invert", flexing, 

sliding, moving, lifting or any other term denoting its movement. Both devices 

allow the liquid to flow when suction moves the flexible diaphragm from its 

"sealed" position on the post. 

Hakim II at *5. Hakim does not state that this analysis is incorrect; he just asserts that this 

limitation was not separately addressed in the opinion. However, the "begins to invert" 
2005-1398 11

limitation of claim 12 was indeed discussed. Reversible error has not been shown on this 

ground. 

We affirm the district court's conclusion that the '620 device is anticipated by the 

device in the IT '286 patent, and that the claims were correctly invalidated. 

Hakim's Expert Declaration

Hakim argues that the district court erred in striking his declaration offered as an 

expert, and that his testimony provided evidence of the validity and correct interpretation of 

his patents. The court sustained the exclusion as follows: 

A magistrate judge's non-dispositive order is reviewable under the clearly 

erroneous and contrary to law standard. 28 U.S.C. § 636(b)(1)(A); Fed. R. 

Civ. P. 72(a); Castillo v. Frank, 70 F.3d 382, 385-86 (5th Cir. 1995). 

In his Memorandum Order granting the Motion to Strike the Hakim 

Declaration, Magistrate Judge Kirk concluded that Hakim failed to provide a 

timely expert report or to submit himself for deposition, that expert testimony 

is not needed by the Court in this case, and that Hakim's testimony is 

self-serving, biased, and "of no assistance to the Court in understanding the 

'technology' involved regarding the simple device at issue in this case." 

This discretionary ruling is not grounds for reversal, for we have not been shown how the 

trier of fact was led into error, or could reasonably have reached a different decision had 

the inventor's declaration been admitted. This evidentiary ruling was in accordance with 

the Rules, and is affirmed. 

AFFIRMED