IN THE SUPREME COURT OF THE STATE OF DELAWARE 

OPTINOSE AS and § 

OPTINOSE, INC., § No. 48, 2021 

 § 

 Defendants Below, § 

Appellants, § Court Below: Court of Chancery 

§ of the State of Delaware 

v. § 

 § C.A. No. 2020-0122 

CURRAX PHARMACEUTICALS, § 

LLC, § 

 § 

 Plaintiff Below, § 

 Appellee. § 

 

 Submitted: September 29, 2021 

Decided: November 2, 2021 

Before SEITZ, Chief Justice; VALIHURA, and MONTGOMERY-REEVES,

Justices. 

Upon appeal from the Court of Chancery: AFFIRMED IN PART, REVERSED 

IN PART. 

Joseph B. Warden, Esquire (argued) and Douglas E. McCann, Esquire, FISH & 

RICHARDSON P.C., Wilmington, Delaware, for Defendants Below, Appellants 

OptiNose AS and OptiNose, Inc. 

Daniel A. O’Brien, Esquire, VENABLE LLP, Wilmington, Delaware, Christopher 

P. Borello, Esquire (argued) and Joshua D. Calabro, Esquire, VENABLE LLP, New 

York, New York, for Plaintiff Below, Appellee Currax Pharmaceuticals LLC. 
2 

SEITZ, Chief Justice: 

OptiNose and Currax are pharmaceutical companies. OptiNose agreed to 

license its Exhalation Delivery Systems (“EDS”) technology to Currax. The EDS 

devices administer powder and liquid drugs through the nose. The parties limited 

the License Agreement to a product which uses a powder EDS device to deliver the 

migraine treatment drug sumatriptan into the nasal cavity. The product covered by 

the license—a powder EDS device and sumatriptan together—is trade-named 

ONZETRA® XSAIL®. 

At the risk of oversimplifying a complex License Agreement, Currax has a 

limited right to sell the sumatriptan powder EDS device (the “Product”) in Canada, 

the United States, and Mexico. OptiNose retained the right to sell EDS devices (1) 

with powders and liquids other than sumatriptan around the world, and (2) EDS 

devices with sumatriptan in every area other than those three countries. OptiNose 

also gave Currax the “first right” to “prosecute and maintain” certain patents related 

to the Product, listed in the License Agreement as the Product Patents. But if 

Currax’s filings or statements “relate to or characterize the Device component of the 

Product or other OptiNose intellectual property,” OptiNose has a right to approve 

patent filings and statements, an approval not to be unreasonably withheld. 

During Currax’s prosecution of the ’009 Patent Application— which covers 

only a powder EDS device and is listed as a Product Patent in the License 
3 

Agreement—the U.S. Patent and Trademark Office (“USPTO”) rejected claims 

because they were not “patentably distinct” from the claims in another Product 

Patent. To overcome the patent office rejection, Currax needed to file a terminal 

disclaimer over the issued Product Patent. 

A terminal disclaimer essentially concedes part of a patent’s monopoly 

protection. In other words, the patent owner agrees that the claims in the patent 

application will not extend beyond the term of the parent patent. As such, the 

terminal disclaimer must be filed by the owner of both patents or someone with 

power of attorney for the owner. Even though Currax had the first right to prosecute 

the ’009 Application, OptiNose was the owner of the ’009 Application and the issued 

patent. Thus, Currax needed a power of attorney from OptiNose to file a terminal 

disclaimer. OptiNose refused to provide it. 

Currax filed suit against OptiNose in the Court of Chancery, seeking an order 

of specific performance requiring OptiNose to grant it a power of attorney. 

OptiNose counterclaimed for a declaration that the License Agreement did not 

require it to provide a power of attorney. According to OptiNose, Currax’s right to 

prosecute Product Patents did not include a power of attorney, and, in any event, 

Currax could not file a terminal disclaimer without OptiNose’s advance approval, 

which it had not given. 
4 

The Court of Chancery granted Currax’s motion for judgment on the 

pleadings. According to the court, the plain language of the License Agreement 

required OptiNose to provide a power of attorney to prosecute the ’009 Application. 

The court also held that OptiNose did not have an advance approval right for a 

terminal disclaimer that does not refer to the tangible EDS Device. The approval 

right covered statements made about the tangible EDS Device, and not statements 

relating to intellectual property incorporated in the EDS Device. 

On appeal, the dispute has morphed into highly technical arguments going 

beyond the allegations in the complaint and counterclaims. Although they raise 

other arguments, the parties have focused primarily on OptiNose’s advance approval 

right, and whether a terminal disclaimer “relate[s] to or characterize[s] the Device 

component of the Patent or other OptiNose intellectual property.” 

We affirm the Court of Chancery’s judgment that filing a terminal disclaimer 

in the ’009 Application prosecution is included in the rights OptiNose gave to Currax 

under the License Agreement. Currax has the first right to prosecute Product Patents 

under the License Agreement, which includes filing terminal disclaimers. But the 

Court of Chancery erred when it took too narrow a view of what it means to “relate[] 

to or characterize[]” the tangible EDS Device used to administer sumatriptan. A 

terminal disclaimer relates to or characterizes the tangible EDS Device because it 
5 

relates to and characterizes the intellectual property incorporated in the tangible EDS 

Device. Thus, we reverse that part of the Court of Chancery’s decision. 

I. 

OptiNose AS and OptiNose, Inc. (“OptiNose”) create and develop 

pharmaceutical products.1 OptiNose developed the Bi-DirectionalTM Exhalation 

Delivery Systems (“EDS”) technology, which can deliver substances into the nasal 

cavity more deeply than conventional nose sprays.2 There are two types of devices 

that use the EDS technology, powder EDS devices and liquid EDS devices.3 One 

device and drug combination is the product ONZETRA® XSAIL® (the “Product”).4 

The Product combines a branded version of the generic migraine drug sumatriptan 

and a powder EDS device designed to deliver the sumatriptan deep into the nasal 

cavity.5 OptiNose licensed the Product to Currax Pharmaceuticals LLC (“Currax”), 

which acquires and commercializes branded and generic prescription drugs. 

1 Currax Pharm. LLC v. OptiNose AS, 2021 WL 223810, at *2 (Del. Ch. Jan. 22, 2021) (hereinafter 

“Opinion” or “Op.”). The facts are drawn from the pleadings, documents incorporated into and 

referred to in the pleadings, and the appendix on appeal. 

2

 App. to the Opening Br. at A0130. 

3

 OptiNose distinguishes between the types of device with its trademarks: the XHANCE® product 

uses a liquid EDS system and the XSAIL® product uses a powder EDS system. See App. to 

Opening Br. at A0130; A0098; A0113. 

4

 Op. at *2; App. to the Opening Br. at A0028 (Complaint ¶15). 

5 See App. to the Opening Br. at A0083–A0084 (Royalty License Agreement § 1.22); id. at A0041 

(Agreement § 1.01(a)). 
6 

The parties entered into a September 25, 2019 License Agreement.6 The 

License Agreement gives Currax the right to make and sell the Product in Canada, 

the United States, and Mexico (the “Territory”).7 The License Agreement also lists 

certain patents and patent applications relevant to the agreement, defined as “the 

OptiNose Patents.”8 These patents are then divided into Platform Patents 9 and 

Product Patents.10 The distinguishing feature between the Product Patents and the 

Platform Patents is apparently whether they cover only a powder EDS device or a 

powder EDS device and a liquid EDS device.11 

Currax has “the first right to control the Prosecution and maintenance of the 

Product Patents in the Territory,” a right subject to two caveats: (1) OptiNose has 

the right to review and comment on all filings to patent agencies such as the USPTO, 

and (2) “filings or statements in any filing relating to or characterizing the Device 

component of the Product or other OptiNose intellectual property shall require 

OptiNose’s prior approval (such approval not to be unreasonably withheld, 

6

Id. at A0037 (Agreement cover page). 

7

Id. at A0038; A0041; A0044. 

8

Id. at A0076 (Agreement Schedule 1.01(b)). There is also a definition in the License Agreement 

of OptiNose Patents that goes beyond the listed patents. Id. at A0040 (Agreement § 1.18). 

9

Id. at A0077 (Agreement Schedule 1.01(c)); id. at A0041 (Agreement § 1.01(a)). 

10 Id. at A0078 (Agreement Schedule 1.01(d)); id. at A0041 (Agreement § 1.01(a)). 

11 Opening Br. at 12; see also App. to the Opening Br. at A0051 (Agreement § 5.01(a)(i)) (“If a 

Product Patent issues with claims that are listable for or Cover XHANCE® (fluticasone 

propionate), such Patent shall cease to be a Product Patent and shall thereafter be a Platform 

Patent.”). 
7 

conditioned or delayed).”12 The License Agreement also provides that “OptiNose 

shall cooperate in transferring the right to Prosecute and maintain the Product Patents 

to Currax, including but not limited to executing any forms required to effect such 

transfer.” 13 OptiNose maintains “the sole right” to prosecute and maintain the 

Platform Patents.14

One of the Product Patents is not an issued patent but a patent application, 

U.S. Patent Application No. 15/879,009 (the “’009 Application”). 15 The ’009 

Application is entitled “Powder Delivery Devices” and covers powder EDS devices 

without reference to the type of drug administered through the EDS device. Another 

is an issued patent—U.S. Patent No. 8,899,229 (the “’229 Patent”), also entitled 

“Powder Delivery Devices.”16 The claims in the ’009 Application significantly 

overlap with the claims of the ’229 Patent, its parent patent.17 

During prosecution of the ’009 Application, the USPTO issued a nonstatutory 

obviousness-type double patenting rejection. 18 There are two types of double 

patenting rejections. One is the “same invention” or “statutory” double patenting 

12 App. to the Opening Br. at A0051 (Agreement § 5.01(a)(i)). 

13 Id. at A0053 (Agreement § 5.01(c)(i)). 

14 Id. at A0051 (Agreement § 5.01(a)(ii)). 

15 Id. at A0078 (Agreement Schedule 1.01(d)); U.S. Patent Application No. 15/879,009 (filed Jan. 

24, 2018). 

16 App. to the Opening Br. at A0078 (Agreement Schedule 1.01(d)); U.S. Patent No. 8,899,229 

(filed Feb. 23, 2006). 

17 See App. to the Opening Br. at A0357–A0358. 

18 Id. at A0356; A0357. 
8 

rejection.19 A statutory double patenting rejection happens when two patents from 

the same owner have the same patent claim, or one that is substantially identical. 

The second is the “nonstatutory” double patenting rejection, which is intended 

primarily to prevent extension of the patent term by rejecting claims in a second 

patent not “patentably distinct” from claims in a first patent.20 In other words, the 

new invention is unpatentable as an obvious variation of the old one. This doctrine 

ensures that a patentee’s right to exclude others from making, using, or selling an 

invention is not extended beyond the time that would be fair—i.e., the time allotted 

to the inventor from the original patent.21 

To overcome an obviousness-type double patenting rejection, a patent 

applicant can file a “terminal disclaimer.” 22 A terminal disclaimer essentially 

surrenders part of a patent’s term. The owner agrees that the new patent will not last 

beyond the term of the parent patent, thereby “disclaiming” the ending “term” of the 

19 A statutory double patenting rejection is based on 35 U.S.C. § 101, which states in the singular 

that an inventor “may obtain a patent.” See, e.g., In re Van Ornum, 686 F.2d 937, 942 (C.C.P.A. 

1982). 

20 See U.S. Patent and Trademark Office, Manual of Patent Examining Procedure § 804 (9th ed. 

Rev. Oct. 2019) (“MPEP”); Op. at *3. 

21 Van Ornum, 686 F.2d at 943–44; see also In re Schneller, 397 F.2d 350, 354 (C.C.P.A. 1968) 

(“if appellant were now to prevail, the end result would be the grant of another patent effectively 

extending the time during which he may exclude others from practicing an invention which is 

disclosed and claimed in his issued patent.”). 

22 E.g., Quad Envtl. Techs. Corp. v. Union Sanitary Dist., 946 F.2d 870, 873 (Fed. Cir. 1991); see 

generally 37 C.F.R. § 1.321 (2021). 
9 

patent.23 Filing a terminal disclaimer has other consequences. Terminal disclaimers 

can also be used in litigation by an accused infringer to attack parent patents, because 

a terminal disclaimer is “a strong clue” that the claims are not distinct from those of 

the parent patent and a concession on behalf of the patentee to that effect.24 It can 

also be used to interpret the claims of a parent patent.25 

As it is a “same invention” rejection, only the patent owner of both patents or 

someone with power of attorney for the owner can file a terminal disclaimer.26 In 

response to the USPTO’s double patenting rejection of the ’009 Application, Currax 

requested that OptiNose, the patent owner, sign a power of attorney to enable Currax 

to file a terminal disclaimer.27 OptiNose refused.28 Currax filed a complaint in the 

Court of Chancery seeking specific performance of its first right to prosecute the 

Product Patents.29 Currax argued that Section 5.01(c)(i) of the License Agreement 

gave Currax the right to prosecute the Product Patents listed in the agreement. 

23 It may also expire before the parent patent—as in this case, when the ’229 Patent received certain 

statutory adjustments that extend its monopoly term. The ’009 Application patent would be 

confined to the ’229 Patent’s term without adjustment, meaning that it would potentially expire 

years before the ’229 Patent. Opening Br. at 32–33 n.4. 

24 E.g., SimpleAir, Inc. v. Google LLC, 884 F.3d 1160, 1168 (Fed. Cir. 2018) (“a terminal 

disclaimer is a strong clue that a patent examiner and, by concession, the applicant, thought the 

claims in the continuation lacked a patentable distinction over the parent”). 

25 See Teva Pharm. USA, Inc. v. Sandoz, Inc., 789 F.3d 1335, 1343 (Fed. Cir. 2015) (“A statement 

made during prosecution of related patents may be properly considered in construing a term 

common to those patents . . . .”). 

26 Japanese Found. for Cancer Research v. Lee, 773 F.3d 1300, 1309 (Fed. Cir. 2014). 

27 Op. at *3. 

28 Id. 

29 App. to Opening Br. at A0023–34. 
10 

Currax also contended the “first right to prosecute” included receiving a power of 

attorney from OptiNose, because it was necessary to file a terminal disclaimer. 

In its answer and counterclaim, OptiNose sought a declaratory judgment “that 

the [License] Agreement does not obligate OptiNose to grant Power of Attorney for 

Currax to control Prosecution . . . .”30 OptiNose also claimed that it had an approval 

right before Currax could file a terminal disclaimer.31 

The Court of Chancery granted Currax’s motion for judgment on the 

pleadings. First, the court held that Currax’s “‘prosecution’ powers [under the 

License Agreement] permit it to file terminal disclaimers, and that by agreeing to 

cooperate in transferring prosecution rights to [Currax], [OptiNose] agreed to 

execute the power of attorney required for [Currax] to implement those rights.”32 

The court also found that OptiNose’s approval right was limited to, in the words of 

the License Agreement, “filings or statements in any filing relating to or 

characterizing the Device component of the Product or other OptiNose Intellectual 

Property.”33 Even though the definition of Device refers to OptiNose intellectual 

property incorporated into the Device, the Court of Chancery held that “Device 

component of the Product” was limited to the tangible object to be manufactured and 

30 Id. at A0108. 

31 Id. at A0109. 

32 Op. at *1. 

33 Id. at *9; App. to the Opening Br. at A0051 (Agreement § 5.01(a)(i)). 
11 

not the intellectual property incorporated in the tangible EDS Device. 34 Thus, 

statements made to the USPTO that were only about intellectual property, such as 

the terminal disclaimer, did not trigger the approval right.35 The court also read 

filings relating to or characterizing “other OptiNose intellectual property” to mean 

“OptiNose intellectual property other than the Product Patents.”36 As such, the court 

held that OptiNose’s approval right was not triggered by filing the terminal 

disclaimer.37 

We review de novo the Court of Chancery’s judgment granting Currax’s 

motion for judgment on the pleadings.38 

II. 

A. 

OptiNose claims that the Court of Chancery erred when it ordered OptiNose 

to provide a power of attorney to allow Currax to file a terminal disclaimer while 

prosecuting the ’009 Application. According to OptiNose, the License Agreement 

does not specify how OptiNose must facilitate Currax’s prosecution rights. Instead, 

the agreement is clear that the only rights granted are those that are expressly set 

34 Op. at *8. 

35 Id. 

36 Id. at *8–9. 

37 Id. at *9. 

38 Desert Equities, Inc. v. Morgan Stanley Leveraged Equity Fund, II, L.P., 624 A.2d 1199, 1204 

(Del. 1993) (“our review of the trial court’s grant of a motion for judgment on the pleadings 

presents a question of law, which we review de novo.”). 
12 

forth in the License Agreement and a requirement to provide a power of attorney 

should not be implied. 

We agree with the Court of Chancery, however, that the License Agreement 

required OptiNose, in principle, to provide a power of attorney. Under the License 

Agreement, Currax has “the first right to control the Prosecution and maintenance 

of the Product Patents in the Territory.”39 OptiNose must “cooperate in transferring 

the right to Prosecute and maintain the Product Patents to Currax, including 

executing any forms required to effect such transfer.” 40 In the agreement, 

“prosecution” includes “any ex parte proceeding or practice before an administrative 

agency such as the United States Patent and Trademark Office.” 41 Terminal 

disclaimers are filed during ex parte patent prosecutions.42 As such, the right to 

“prosecute” includes filing terminal disclaimers. And only the owner or “the 

attorney of record with power of attorney” for both patents can file a terminal 

disclaimer.43 Therefore, if Currax needs to file a terminal disclaimer in prosecuting 

39 App. to the Opening Br. at A0051 (Agreement § 5.01(a)(i)). 

40 Id. at A0053 (Agreement § 5.01(c)(i)). 

41 Id. at A0041 (Agreement § 1.01(a)). 

42 Op. at *6. The definition of prosecution does not include “post-grant reviews, inter partes 

reviews or oppositions.” App. to the Opening Br. at A0041 (Agreement § 1.01(a)). These 

procedures take place after the issuance of a patent—further confirming that the parties intended 

to cover all filings that take place during prosecution. 

43 Op. at *6 (first quoting 37 C.F.R. § 1.321(b)(1) (2021); then quoting Japanese Found. for 

Cancer Research, 773 F.3d at 1309). 
13 

the Product Patents, OptiNose must, subject to other limitations in the License 

Agreement, provide a power of attorney to file a terminal disclaimer. 

OptiNose also argues that a terminal disclaimer abandons a patent because the 

disclaimer effectively abandons part of its term. The License Agreement provides 

that “[i]f Currax determines to abandon or not maintain any Product Patent,” it will 

inform OptiNose and “OptiNose shall then have the right (but not the obligation) to 

Prosecute and maintain such Product Patent in OptiNose’s name” and Currax’s 

licenses as to that patent will be terminated.44 Thus, according to OptiNose, the 

License Agreement allows OptiNose to assume control of the prosecution if Currax 

chooses to file a terminal disclaimer. 

The Court of Chancery properly recognized, however, that abandonment 

under the License Agreement is directed to “unilateral abandonment of a Product 

Patent.” 45 By contrast, a terminal disclaimer “allows the patent application to 

continue, rather than changing the patent’s scope or abandoning the application.”46 

And abandonment is a term of art in patent law, set forth in the Code of Federal 

Regulations, which is not applicable in these circumstances. 47 If we accepted 

OptiNose’s definition of abandonment, Currax would be “abandoning” the Product 

44 App. to the Opening Br. at A0051 (Agreement § 5.01(a)(i)). 

45 Op. at *7. 

46 Id. 

47 Id. (citing MPEP § 711; 37 C.F.R. §§ 1.135; 1.138 (2021)). 
14 

Patents every time it limited or gave up claims in any prosecution, an absurd result. 

Currax has not, therefore, abandoned the ’009 Application or its claims. 

B. 

We turn to the main issue in this appeal—whether Section 5.01(a)(i) requires 

OptiNose’s approval before Currax can file a terminal disclaimer to overcome the 

rejection of the ’009 Application in light of the ’229 Patent. Section 5.01(a)(i) of 

the License Agreement provides as follows: 

Currax shall have the first right to control the Prosecution and 

maintenance of the Product Patents in the Territory; provided that 

Currax shall provide copies to OptiNose of all communications with 

the applicable patent offices reasonably in advance of filing and 

OptiNose shall have the right to review and comment on such filings, 

which Currax shall reasonably consider; provided, further, that filings 

or statements in any filing relating to or characterizing the Device 

component of the Product or other OptiNose intellectual property shall 

require OptiNose’s prior approval (such approval not to be 

unreasonably withheld, conditioned or delayed).48 

The Court of Chancery held that the “Device” was limited to the tangible EDS 

Device used to deliver a drug in the Product, and “[w]here, as here, a terminal 

disclaimer does not relate to or characterize a tangible component of the [Product], 

it does not relate to or characterize the ‘Device component of the Product’ and does 

not . . . trigger” OptiNose’s approval right.49 

48 App. to the Opening Br. at A0051 (Agreement § 5.01(a)(i)). 

49 Op. at *8. 
15 

OptiNose argues that a terminal disclaimer cuts short the ’009 Application 

patent term covering the “nosepiece assembly” component of the EDS Device and 

acts as a concession that the nosepiece assembly in the ’009 Application is not 

patentably distinct from the nosepiece assembly in the ’229 Patent. 50 Thus, a 

terminal disclaimer is a filing “relating to” and characterizing the Device component 

of the Product. And the Device component of the Product, OptiNose argues, 

includes the intellectual property covering the device. According to OptiNose, if 

patent filings like a terminal disclaimer do not relate to or characterize the 

intellectual property covering the tangible EDS Device, OptiNose would never have 

approval rights over any patent filings or statements because the tangible EDS 

Device has no role to play in patent prosecution proceedings. 

Currax responds that the patent office statements must be confined to 

statements relating to the tangible EDS Device and not intellectual property covering 

the tangible EDS Device.51 If not, Currax contends, the statements would apply to 

every Product Patent and render meaningless Currax’s first right to control the 

prosecution of Product Patents. 

We agree with the Court of Chancery that the parties intended the “Device 

component of the Product” to refer to the tangible EDS Device used to administer 

50 Opening Br. at 5–6. 

51 Answering Br. at 5. 
16 

sumatriptan. But we also find that the Court of Chancery gave too limited a reading 

to what it means for a patent office statement or filing, such as a terminal disclaimer, 

to “relate to or characterize” the tangible EDS Device. In our view, a terminal 

disclaimer relates to or characterizes the tangible EDS Device used to administer 

sumatriptan because it relates to and characterizes the intellectual property 

incorporated in the tangible EDS Device. 

i. 

First, the words “relating to,” like the words “arising under” or “involving,” 

signal an intent to interpret expansively the connection between patent office 

statements or filings, and the tangible EDS Device used to administer sumatriptan.52 

“Characterize” should be given its ordinary meaning, “[t]o describe the distinctive 

nature or features of.”53 Next, we look to the definitions the parties used in the 

License Agreement. “Device” means “a device or component thereof incorporating 

the OptiNose Patents or other intellectual property rights owned or Controlled by 

52 Eon Labs Mfg., Inc. v. Reliance Ins. Co., 756 A.2d 889, 892 (Del. 2000) (affirming a Superior 

Court judgment that all the allegations against [the plaintiff] “‘come within the scope of the arising 

out of language,’ including ‘claims related to the use of [plaintiff’s drug] . . . .’ The basis for this 

holding is that all claims are ‘related to the fact that Eon manufactured and distributed 

phentermine.’” (emphasis added) (citations omitted)); see also Liggett Grp. Inc. v. Affiliated FM 

Ins. Co., 2001 WL 1456871, at *6 (Del. Super. Ct. Sept. 12, 2001), aff’d sub nom. Liggett Grp., 

Inc. v. Ace Prop. & Cas. Ins. Co., 798 A.2d 1024 (Del. 2002) (holding that symptoms or 

consequences causally linked to smoking are “related to” smoking even if not directly caused by 

the act of smoking). 

53 Characterize, v., Oxford English Dictionary Online, https://www.oed.com/view/Entry/30656 

(last visited Oct. 27, 2021). 
17 

OptiNose.”54 The parties do not dispute that the “Device” referred to in Section 

5.01(a)(i) refers to the tangible EDS Device that delivers the drug into the nasal 

cavity. 55 “OptiNose Patents” are those patents necessary to make and sell the 

Product.56 Finally, the “Product” means “the pharmaceutical product known as 

ONZETRA® XSAIL® . . . .”57 

ii. 

To “give sensible life to [the] contract,” we look to the “overall scheme or 

plan” of the agreement and the “basic business relationship between [the] 

parties[.]”58 Currax received a limited license in the Territory to sell the sumatriptan 

powder EDS device to treat migraines. OptiNose retained all other rights in the 

Product Patents around the world.59 Notably, Currax had only a “first right” to 

prosecute the Product Patents—as compared to OptiNose’s “sole right” to control 

54 App. to the Opening Br. at A0039 (Agreement § 1.01(a)). 

55 Answering Br. at 30–32; Reply Br. at 5–6; see also Transcript of Oral Argument at 17, ll. 5–12,

Currax Pharmaceuticals LLC v. OptiNose AS, et al., No. 2020-0122-MTZ (Del. Ch. Oct. 23, 2020) 

(OptiNose: “the specific terminal disclaimer . . . relates to a prior product patent that relates to, 

you know, aspects in the physical device . . . the specific terminal disclaimer would relate to either 

the physical device, because of the characterized aspect of it[.]”). 

56 App. to the Opening Br. at A0039 (Agreement § 1.01(a)). 

57 Id. 

58 Chicago Bridge & Iron Co. N.V. v. Westinghouse Elec. Co. LLC, 166 A.3d 912, 927 (Del. 

2017), as revised (June 28, 2017) (“The basic business relationship between parties must be 

understood to give sensible life to any contract.”); GMG Capital Investments, LLC v. Athenian 

Venture Partners I, L.P., 36 A.3d 776, 779 (Del. 2012) (“The meaning inferred from a particular 

provision cannot control the meaning of the entire agreement if such an inference conflicts with 

the agreement’s overall scheme or plan.” (citation omitted)). 

59 Opening Br. at 12; see Chicago Bridge, 166 A.3d at 928 (holding that interpretation of a 

provision is “informed by its function in the overall [agreement].”). 
18 

the Platform Patents.60 If Currax made statements to the USPTO about OptiNose’s 

core product—the EDS Device—it makes sense that it would require OptiNose’s 

prior approval. Otherwise, Currax might make statements about the powder EDS 

device that could have negative effects on OptiNose’s worldwide patent portfolio 

covering EDS devices, or its use in the Territory with powders other than 

sumatriptan. 

The Court of Chancery held that statements made to the patent office do not 

relate to or characterize the “Device” as a tangible component of the Product when 

they do not refer to something other than intellectual property covering the device. 

We disagree. First, the License Agreement defines “Device” as “a device or 

component thereof incorporating the OptiNose Patents or other intellectual property 

rights owned or Controlled by OptiNose.”61 By making the point that the tangible 

EDS Device incorporates the OptiNose Patents, the parties intended the intellectual 

property covering the tangible device to be included within the definition of Device. 

Equally important, the court’s interpretation effectively leaves OptiNose 

without an approval right. The reference to the Device appears in the section 

directed to “Intellectual Property Matters” and “Patent Prosecution.”62 Subsection 

60 Compare App. to the Opening Br. at A0051 (Agreement § 5.01(a)(i)) with id. (Agreement 

§ 5.01(a)(ii)). 

61 Id. at A0039 (Agreement § 1.01(a)). 

62 Id. at A0051 (Agreement art. 5). 
19 

5.01(a) is titled “Prosecution of OptiNose Patents.”63 Filings relating to the Device 

are made during patent prosecution proceedings, like those occurring with the ‘009 

Application. At oral argument Currax was hard-pressed to come up with an example 

of how a patent office filing would relate to just the tangible Device and not 

intellectual property covering the device. 64 That is probably because tangible 

devices do not have a role in patent prosecutions. The USPTO expressly discourages 

submission of physical models or extrinsic evidence with respect to a patent or 

application.65 If, as the Court of Chancery held, patent office filings relating to or 

characterizing the Device Component of the Product are limited to the tangible EDS 

Device and not intellectual property covering the Device, OptiNose’s prior approval 

right would be essentially meaningless in patent prosecution proceedings.66 

When we include OptiNose’s intellectual property rights with the tangible 

EDS Device, and give an expansive reading of a patent office filing that “relates to” 

63 Id. (Agreement § 5.01). 

64 Currax claimed that, in response to an obviousness type rejection, Currax could point to the 

commercial success of the physical Product which embodies the claims to overcome the rejection. 

Oral Argument at 24:00–24:30. But this supports the idea that the patent would be related to the 

Device component of the Product, if not fully characterizing the Product. And Currax’s argument 

means that any approval right is extremely limited—covering only one, potentially unnecessary 

filing—and would render the provision essentially meaningless. 

65 37 C.F.R. § 1.91 (2021); MPEP § 608.03; cf. 21 C.F.R. § 314.53 (2021) (requiring entities 

submitting pharmaceuticals to the Food and Drug Administration for approval to list “each patent 

claim[ing] the drug or a method of using the drug”). 

66 See Kuhn Constr., Inc. v. Diamond State Port Corp, 990 A.2d 393, 396–97 (Del. 2010) (stating 

that Delaware courts “will give each provision and term effect, so as not to render any part of the 

contract mere surplusage.” (citation omitted)); Restatement (Second) of Contracts § 202 cmt. a 

(1981) (“The meaning of words and other symbols commonly depends on their context.”). 
20 

the Device, it is easy to conclude that the terminal disclaimer filed in the ’009 

Application relates to the intellectual property incorporated into the tangible EDS 

Device. The ’009 Application, entitled “Powder Delivery Devices,” is directed to 

the structure of the nosepiece assembly in a powder EDS device for use with any 

powder. The ’229 Patent, similarly, is not restricted to sumatriptan or any powder. 

A terminal disclaimer filed in the ’009 Application prosecution would concede that 

the ’009 Application claims are not patentably distinct from the ’229 Patent claims. 

The terminal disclaimer therefore characterizes the Device component of the Product 

by admitting that these two inventions, both implemented in the EDS Device, are 

largely the same. 

A terminal disclaimer filed in the ’009 Application could have real world 

implications for the tangible EDS Device in patent litigation. As an example, an 

accused infringer of the Device component of the Product could point to differences 

between their product and the Device component of the Product (which incorporates 

the ’229 Patent) as evidence that their product did not infringe the ’229 Patent.67 The 

tangible EDS Device and the claims of the patents that it incorporates are 

inextricably linked in patent office proceedings—including when a party makes 

67 E.g., TEK Glob., S.R.L. v. Sealant Sys. Int’l, Inc., 920 F.3d 777, 788 (Fed. Cir. 2019) (finding a 

comparison between a commercial product and an accused product can be used to “support a 

finding of infringement” “when a commercial product meets all the claim limitations” or embodies 

the claims. (quoting Adams Respiratory Therapeutics, Inc. v. Perrigo Co., 616 F.3d 1283, 1289 

(Fed. Cir. 2010))). 
21 

statements about the nature of the device through a terminal disclaimer that relates 

to an EDS Device patent. 

Our interpretation does not “swallow” the License Agreement’s separate 

provision restricting OptiNose’s right to review and comment on “all 

communications with the applicable patent offices[.]”68 There are Product Patents 

that do not relate directly to the tangible EDS Device—patents directed to 

“Sumatriptan Powder Delivery” and “Temperature/Moisture Regulation.”69 While 

there may be statements in these filings that relate to the Device, it is evident not all 

Product Patent statements or filings relate to the Device. As OptiNose concedes, if 

Product Patents, such as U.S. Patent No. 9,649,456, are directed to a powder EDS 

device delivering sumatriptan, these patents are directed to the Product, and not the 

Device component of the Product.70 Filings or statements in those cases are unlikely 

to relate to or characterize a powder EDS device that does not contain sumatriptan, 

and OptiNose agrees that this is an area where Currax can prosecute “without 

OptiNose’s approval.”71 

Indeed, in the original ’009 Application, claim 16 states: 

16. A capsule for containing a powdered substance which 

exhibits insufficient tackiness, and optionally no surface tackiness, in 

the presence of moisture so as not to adhere to an inner surface of a 

68 App. to the Opening Br. at A0051 (Agreement § 5.01(a)(i)). 

69 Id. at A0078 (Agreement Schedule 1.01(d)). 

70 Reply Br. at 3–5; U.S. Patent No. 9,649,456 (filed Apr. 7, 2008). 

71 Reply Br. at 4–5. 
22 

capsule chamber which contains the capsule during emptying of the 

capsule.72 

This capsule is meant for use in the tangible EDS Device—but it is not a 

statement that relates to or characterizes the device itself. It is a delivery system for 

the powdered substance, a capsule that contains a predetermined dose. OptiNose 

would not have an approval right. In contrast, the ’009 Application relates only to 

the Device component of the Product, and Currax wishes to file a terminal disclaimer 

that characterizes the ’229 Patent and the ’009 Application’s claims covering the 

EDS Device. We do not see any inconsistency in giving OptiNose expansive rights 

to approve in advance filings relating to the intellectual property incorporated in the 

tangible EDS Device. It is consistent with how the parties allocated rights under the 

License Agreement. 

III. 

We affirm the Court of Chancery’s ruling that the License Agreement, in 

principle, can require OptiNose to provide a power of attorney. But we reverse the 

Court of Chancery’s ruling that the terminal disclaimer “does not relate to or 

72 U.S. Patent Application No. 15/879,009 (filed Jan. 24, 2018), available at

https://patents.google.com/patent/US20180272085A1/en?oq=15%2f879%2c009. The ’009 

Application is referenced numerous times in the pleadings and relied upon below, though not 

identified in the complaint. It is also incorporated by reference into the contract (at Schedule 

1.01(d)) and as such, we may consider it here. App. to the Opening Br. at A0078; Rag American 

Coal Co. v. AEI Resources, Inc., 1999 WL 1261376, at *9 (Del. Ch. Dec. 7, 1999) (holding that 

“a document incorporated by reference into the contract” is not “extrinsic evidence,” and may be 

considered in deciding a motion for judgment on the pleadings).
23 

characterize the ‘Device component of the Product.’” 73 Currax must obtain 

OptiNose’s approval, not to be unreasonably withheld, before filing the terminal 

disclaimer in the ’009 Application. 

73 Op. at *8.