# United States **Court of Appeals**  **for the Federal Circuit**

______________________ IN RE: CELLECT, LLC, Appellant

______________________

2022

- 1293, 2022

- 1294, 2022

- 1295, 2022

- 1296

______________________ Appeals from the United States Patent and Trademark Office, Patent Trial and Appeal Board in No s . 90/014,453, 90/014,454, 90/014,455, 90/014,457.

______________________

Decided: August 28, 2023

______________________

P AUL J. A NDRE , Kramer Levin Naftalis & Frankel LLP,Redwood Shores, CA, argued for appellant. Also represented by J AMES R. H ANNAH , L ISA K OBIALKA ; J ONATHAN C APLAN , J EFFREY P RICE , New York, NY.

K

AKOLI C APRIHAN , Office of the Solicitor, United States Patent and Tr ademark Office, Alexandria, VA, argued for appellee Katherine K. Vidal. Also represented by T HOMAS W. K RAUSE , A MY J. N ELSON , B RIAN R ACILLA , F ARHEENA Y

ASMEEN R ASHEED

.

J EREMY L OWE , Leydig, Voit & Mayer, Ltd., Chicago, IL, for amicus curiae Alvogen PB Research & Development LLC. Also represented by K EELIN B IELSKI , S TEVEN H. S KLAR

.

K URT A. M ATHAS , Winston & Strawn LLP, Chicago, IL, Case: 22-1293 Document: 91 Page: 1 Filed: 08/28/2023IN RE : CELLECT , LLC 2

for amicus curiae Association for Accessible Medicines. Also represented by C LAIRE A. F UNDAKOWSKI , Washingto n, DC.

K EVIN E DWARD N OONAN , McDonnell Boehnen Hulbert& Berghoff LLP, Chicago, IL, for amicus curiae Biotechnology Innovation Organization. Also represented by A ARON V INCENT G IN , A LEXA L. G IRALAMO , D ANIEL G ONZALEZ , J R ., D ONALD L OUIS Z UHN , J R

. ; H ANSJORG S AUER , Biotechnology Innovation Organization, Washington, DC.

P AUL B ERGHOFF , McDonnell Boehnen Hulbert & Berghoff LLP, for amicus curiae Intellectual Property Owners Association. Also represented by H ENRY H ADAD , Bristol Myers Squibb, Law renceville, NJ.

J EFFREY P AUL K USHAN , Sidley Austin LLP, Washington, DC, for amicus curiae Pharmaceutical Research and Manufacturers of America. Also represented by S TEVEN J. H OROWITZ , Chicago, IL; D AVID E VAN K ORN , Pharmaceutical Research and Manufacturers of America , Washington, DC

.

D OUGLAS H ALLWARD -D RIEMEIER , Ropes & Gray LLP, Washington, DC, for amici curiae Samsung Electronics Co., Ltd., Samsung Electronics America, Inc. Also represented by S COTT A NTHONY M C K EOWN ; J AMES L AWRENCE D AVIS , J R

. , East Palo Alto, CA; A LEXANDER E. M IDDLETON , New York, NY.

______________________

Before L OURIE , D YK , and R EYNA , Circuit Judges

. L OURIE , Circuit Judge

. Cellect, LLC (“Cellect”) appeals from four ex parte reexamination decisio ns of the United States Patent and Trademark Office (“USPTO”) Patent Trial and Appeal Board (“the Board”) affirming the unpatentability of: (1) claims Case: 22-1293 Document: 91 Page: 2 Filed: 08/28/2023IN RE : CELLECT , LLC 3

22, 42, 58, and 66 of U.S. Patent 6,9 82 ,742 (“the ’742 patent”); (2) claims 1, 17, 19, 21, 22, 27, 49, 55, and 61 of U.S. Patent 6,424,369 (“the ’369 patent”); (3) claims 1, 5, 11, 33, 34, 58, and 64 of U.S. Patent 6,4 5 2,626 (“the ’626 patent”); and (4) claims 25

– 29 and 33 of U.S. Patent 7,002,621 (“the ’621 patent”) for obviousness

- type double patenting (“ ODP”). Ex parte Cellect LLC , Appeal 2021

- 005302 (P.T.A.B. Feb. 17, 2020), J.A. 27

– 49; Ex parte Cellect LLC

, Appeal 2021

- 005046 (P.T.A.B. Feb. 18, 2020), J.A. 51

– 73; Ex parte Cellect LLC , Appeal 2021

- 005258 (P.T.A.B. Feb

. 19, 2020), J.A. 76

– 97; Ex parte Cellect LLC , Appeal 2021

- 005303 (P.T.A.B. Feb

. 16, 2020), J.A. 2

– 24. 1 For the reasons provided below, we affirm.

B ACKGROUND Cellect owns the ’742, ’369, ’626, and ’621 patents (“the challenged patents”), each of which is directed to devices ( e.g. , personal digital assistant devices or phones) comprising image sensors. The challenged patents are all interrelated, each claiming priority from a single application that issued as U.S. Patent 6,275,255 (“the ’255 patent”). The ’369 and ’626 patents are continu ations

- in

- part of the ’255 patent. The ’742 patent is a continuation

- in

- part of the ’369 patent, and the ’621 patent is a continuation

- in

- part of the ’626 patent. U.S. 6,862,036 (“the ’036 patent”), another member of this family, is a continuation of the ’626 patent.
Each of the challenged patents was granted PatentTerm Adjustment (“PTA”) for USPTO delay during prosecution pursuant to pre

- AIA 35 U.S.C. § 154(b). Because each family member patent claims priority from the same application, each would hav e expired on the same day but for the individual grants of PTA. None of the patents was

1 The four a ppeals for ex parte reexamination issued by the Board essentially contain the same language and analysis. We treat Appeal 2021

- 005302 as representative. Case: 22-1293 Document: 91 Page: 3 Filed: 08/28/2023IN RE : CELLECT , LLC 4

subject to a terminal disclaimer during prosecution, and the challenged patents are all expired, even after factoring in the grants of PTA. The relationship of the ap plications and issued patents, including the individual grants of PTA, is indicated in the figure

Cellect sued Samsung Electronics, Co. (“Samsung”) for infringement of the challenged patents in the United States District Court for the District of Colorado. Samsung then requested the underlying ex parte reexaminations, asserting that the patents were u npatentable based on ODP, which was not raised by the e xaminer during prosecution. In each reexamination proceeding, the e xaminer issued a Final Office Action determining that the challenged claims were obvious variants of Cellect’s prior

- expiring referen ce patent claims. For the four ex parte reexamination proceedings, the asserted claims and ODP invalidating reference patents are indicated in the table, with representative claims indicated in bold. Case: 22-1293 Document: 91 Page: 4 Filed: 08/28/2023IN RE : CELLECT , LLC 5

The invalidation of all claims under ODP can b e traced back to the ’036 patent, which is the only family member that did not receive a grant of PTA and thus retained an expiration date twenty years after the filing of the priority patent application . Specifically, the ’621 patent claims were found to be unpatentable over the ’626 patent claims, which were found to be unpatentable over the ’369 patentclaims. The ’742 patent claims were also found to be unpatentable over the ’369 patent claims. The ’369 patent claims were themselves found to be unpatentable over the ’036 patent claims. Thus, although the ODP invalidating reference patents form a network across the four ex parte reexamination proceedings, all invalidated claims can be traced back to the single family member patent that did not receive a grant of PTA: the ’036 patent.
Cellect appealed the rejection of the claims of the challenged patents to the Board. Cellect noted that under Novartis AG v. Ezra Ventures LLC , 909 F.3d 1367 (Fed. Cir. 2018), ODP does not invalidate a validly obtained Pa tent Term Extension (“PTE”) under 35 U.S.C. § 156, and arguedthat the Board should similarly hold that ODP cannot negate a statutory grant of PTA. That is, Cellect argued that determining unpatentability under ODP should be based on the expiration dates of the patents before any PTA is added to the term.
Cellect further argued that an ODP rejection is notproper under the equitable principles underlying ODP, including (1) preventing the receipt of an improper timewise extension of a patent term, and (2 ) preventing split ownership of related patents and subsequent potential harassment by multiple owners or assignees. Cellect asserted Case: 22-1293 Document: 91 Page: 5 Filed: 08/28/2023IN RE : CELLECT , LLC 6

that no terminal disclaimer could be filed to cure the rejection since the patents had expired, but that it had promisednot to sell its expired patents. That, Cellect contended, abrogated the risk of harassment by multiple owners or assignees. Cellect also argued that the ex parte reexamination requests were not properly granted because the e xaminer had allegedly considered ODP during prosecution of the challenged patents, and so none of the requests presented a substantial new question of patentability, a requirement for a proper ex parte reexamination.
In each of the four appeals from ex parte reexamination, the Board sustained the e xaminer’s determinationsthat the asserted claims of the challenged patents were unpatentable under ODP. The Board further considered whether or not an ODP analysis on a patent that has been granted PTA should be based on the expiration date of thepatent with PTA or without PTA. First, the Board compared the cases on appeal for reexamination to that in Merck & Co. v. Hi

- Tech Pharmacal Co. , 482 F.3d 1317 (Fed.Cir. 2007), a case in which a patent owner had filed a terminal disclaimer to ove rcome an ODP rejection, after which that patent was awarded PTE. There, as the Board noted, we held that “a patent term extension under [35 U.S.C.] § 156 is not foreclosed by a terminal disclaimer.” Id. at 1322 ; J.A. 33 . Stated otherwise, the Board note d thata “patent term extension is from the expiration date resulting from the terminal disclaimer and not from the date the patent would have expired in the absence of the terminal disclaimer.” Merck , 482 F.3d at 1322

– 23 ; J.A. 33

. The Board also compared the cases on appeal to that in Novartis , a case in which we addressed the interaction between ODP and PTE in the absence of a terminal disclaimer. 909 F.3d at 136 7 . There, as the Board noted, we held that, “as a logical extension of [the] holding in Merck & Co. v. Hi

- Tech ,” ODP should be considered from the Case: 22-1293 Document: 91 Page: 6 Filed: 08/28/2023IN RE : CELLECT , LLC 7

expiration date of the patent before the addition of PTE. Id. at 1373

– 74

. In the four underlying appeals for ex parte reexamination, the Board framed the issue as a question of how PTA affects an ODP analysis and whether an ODP analysis should be based on the expiration date of a patent with or without any granted PTA added. J.A. 35

– 38. The Board concluded that Cellect’s argument that a judge

- made doctrine ( i.e. , ODP) cannot cut off a statutorily authorized time extension ( i.e. , PTA) was unpersuasive because it ignored the text of § 154 and the holding of Novartis . J.A. 35. First, the Board concluded that the reasoning in the precedent, including Merck , was based on differe nces between the statutory language in § 156 and § 154. J.A. 35

– 36. Second, the Board found that the statutory language in § 154(b)(2)(B) makes clear that any terminal disclaimer should be applied after any PTA is granted or, in other words, that a PTA c annot adjust a term beyond the disclaimed date in any terminal disclaimer. J.A. 36

– 37. It therefore concluded that, unlike PTE, a grant of PTA shall not extend the term of a patent past the date of a terminal disclaimer. J.A. 3 8.

The Board also reasoned that terminal disclaimersarise almost exclusively in situations to overcome ODP rejections, and so Congress, by addressing terminal disclaimers in § 154, effectively addresses ODP. JA. 37. The Board further reasoned that this court has stated that ODP “ prevent [s] an inventor from securing a second, later expiring patent” for an invention covered by a patent that was filed at the same time but that has a different patent term due
to a grant of PTA. AbbVie Inc. v. Mathilda & Terence Kennedy Inst. of Rheu matology Tr. , 764 F.3d 1366, 1373 (Fed. Cir. 2014); J.A. 38. It found that this rationale applied

. J.A. 38.
Based on those findings and reasoning, the Board held that both ODP and terminal disclaimers should be Case: 22-1293 Document: 91 Page: 7 Filed: 08/28/2023IN RE : CELLECT , LLC 8

considered after any PTA. J.A. 38. That is, any ODP analysis or determin ation, whether or not a terminal disclaimer is required

, should be based on the adjusted expiration date of the patent.

The Board further found that the asserted claimswould have been obvious in view of the respective invalidating ODP references and noted that Cellect did not dispute that fact. J.A. 43. Cellect instead focused its argument on whether or not ODP could cut short a grantof PTA. The Board also found that Cellect received an unjustified timewise extension of patent term for the asserted claims of the challenged patents and that a risk of divided ownership, and subs equent harassment by multiple assignees, remained active. J.A. 44

– 46. Finally, the Boardfound that ODP was a substantial new question of patentability and that Cellect’s arguments that the e xaminer had considered ODP during prosecution lacked merit. J. A. 46.In particular, the Board determined that there was no indication that the e xaminer had considered ODP during prosecution of the challenged patents. J.A. 46. Further, the Board concluded that the e xaminer’s knowledge of other Cellect

- owned patents , or his willingness to issue ODP rejections in the prosecution of other Cellect

- filed applications, did not amount to a finding that the e xaminer had considered ODP in the prosecution of the challenged patents. J.A. 46.

The Board sustained the finding of unpatentability ofthe claims under ODP, and Cellect appealed. We have jurisdiction under 28 U.S.C. § 1295(a)(4)(A).

D ISCUSSION Cellect raises three challenges on appeal. First, Cellect contends that the Board erred in determining that whether

or no t a patent is unpatentable for ODP is determined based on the date of expiration of a patent that includes any duly granted PTA pursuant to 35 U.S.C. § 154. Second, Cellect contends that the Board erred in failing to Case: 22-1293 Document: 91 Page: 8 Filed: 08/28/2023IN RE : CELLECT , LLC 9

consider the equitable concerns underl ying the finding of ODP in the ex parte reexamination proceedings. Third,Cellect contends that the Board erred in finding a substantial new question of patentability in the underlying ex partereexaminations, and thus that the reexamination proceedings w ere improper. We address each argument in turn.
We may not set aside the Board’s decisions unless they

were “arbitrary, capricious, an abuse of discretion, unsupported by substantial evidence, or otherwise not in accordance with law.” In re Sullivan , 36 2 F.3d 1324, 132 6 (Fed. Cir. 2004); 5 U.S.C. § 706(2)(A ). ODP is a question of law that we review de novo

. In re Emert , 124 F.3d 1458, 1460 (Fed. Cir. 1997). Whether or not a substantial new question of patentability exists is a question of fact that we review for substantial evidence. In re Swanson , 540 F.3d 1368, 1375, 1381 (Fed. Cir. 2008). “Substantial evidence ismore than a mere scintilla and means such relevant evidence as a reasonable mind might accept as adequate to support a conclusion.” Cel gene Corp. v. Peter , 931 F.3d 1342, 1349 (Fed. Cir. 2019) (quotation mark s and citations omitted).

I
We first consider Cellect’s challenge to the Board’s determination that the unpatentability of claims under ODP must be based on the date of expiration of a patent that includes any duly granted PTA pursuant to 35 U.S.C. § 154. That statute, in relevant p art, reads as follows:
Contents and term of patent; provisional rights.
(b) Adjustment of Patent Term. — (1) Patent term guarantees. — (A) Guarantee of prompt patent and trademark office responses.

— Subject to the limitations under paragraph (2), if the issue of an original Case: 22-1293 Document: 91 Page: 9 Filed: 08/28/2023IN RE : CELLECT , LLC 10

patent is delayed due to the failure of the Patent and Trademark Office to — (i)

– (i v ) [providing for appropriate notifications and USPTO response times ],
the term of the patent shal l be extended 1 day for each day after the end of the period specified in clause (i), (ii), (iii), or (iv)

, as the case may be, until the action described in such clause is taken.
(B) Guarantee of no more than 3

- year application pendency.

— Subject to the l imitations under paragraph (2), if the issue of an original patent is delayed due to the failure of the United States Patent and Trademark Office to issue a patent within 3 years after the actual filing date of the application under section 111(a) in the U nited States or, in the case of aninternational application, the date of commencement of the national stage under section371 in the international application, not including — (i)

– (iii) [providing for timing exceptions],
the term of the patent shall be ext ended 1 day for each day after the end of that 3

- year period until the patent is issued.
(C) Guarantee of adjustments for delays due toderivation proceedings, secrecy orders, and appeals.

— Subject to the limitations under paragraph (2), if the issue of an original patent is delayed due to — (i)

– (iii) [providing for delay conditions related to derivation proceedings, secrecy orders, and appeals], Case: 22-1293 Document: 91 Page: 10 Filed: 08/28/2023IN RE : CELLECT , LLC 11

the term of the patent shall be extended 1 day for each day of the pendency of the proceeding, order, or review, a s the case may be.
(2) Limitations. — ***
(B) Disclaimed term. —No patent the term of which has been disclaimed beyond a specified date may be adjusted under this section beyond the expiration date specified in the disclaimer.
(C) Reduction of period of adjustment. — (i) The period of adjustment of the term of a patent . . . shall be reduced by a period equal to the period of time during which theapplicant failed to engage in reasonable efforts to conclude prosecution of the application.
35 U.S.C. § 154(b) (emphas e s added).

Because the arguments in this case involve c omparison between § 154 and § 156, we also set forth the relevant text of § 156.
Extension of patent term
(a) The term of a patent which claims a product, amethod of using a product, or a method of manufacturing a product shall be extended in accordance with this section from the original expiration date of the patent, which shall include any patent term adjustment granted under section 154(b), if — (1)

– (5) [providing requirements for a grant of PTE]

*** Case: 22-1293 Document: 91 Page: 11 Filed: 08/28/2023IN RE : CELLECT , LLC 12

(c)(3) The term of a p atent eligible for extension under subsection (a) shall be extended by the time equal to the regulatory review period for the approved product which period occurs after the date the patent is issued

, except that

. . . if the period remaining in the term of a patent after the date of the approval of the approved product under the provision of law under which suchregulatory review occurred when added to the regulatory review period as revised under paragraphs (1) and (2) exceeds fourteen years, the period of extension shall be reduced so that the total of both such periods does not exceed fourteen years ;
***
(g)(6) A period determined under any of the preceding paragraphs is subject to the following limitations:
(A) I f the patent involved was issued after the date of enactment of this section, the period of extension determined on the basis of the regulatory review period determined under any such paragraph may not exceed five years.
(B) I f the patent involved was issued before the date of the enactment of th is section and — (i)

– (iii) [providing for exceptions pertaining to exemptions, major health or environmental health effects tests, or clinical investigations before such date of the approved product],

. . . the period of extension determined on the basis of the regulatory review period determined under any such paragraph may not exceed five years.
35 U.S.C. § 156(a), (c)(3), (g)(6) (emphas e s added).
Cellect argues that PTA and PTE should be factored into an ODP analysis in the same way, i.e. , determining

w hether or not claims are unpatentable under ODP based on their expiration date s before the addition of any granted Case: 22-1293 Document: 91 Page: 12 Filed: 08/28/2023IN RE : CELLECT , LLC 13

PTA or PTE. Cellect alleges that our precedent, legislative intent, and the statutory language all dictate this outcome. First, Cellect ass erts that Novartis holds that a statutorily authorized extension of patent term ( i.e

. , PT E ) cannot be terminated by a judicial doctrine, here ODP. 909 F.3d at1375. Because PTA and PTE are both statutorily authorized extensions of term, Cellect contends that ODP cannotcut off PTA and that whether or not claims are unpatentable under ODP should be based on the expiration date that does not include the addition of any duly granted PTA.

Further , Cellect argues that PTA and PTE have similar statutory limitations. Cellect asserts that PTE is limited in that the patent owner must choose one patent to receive a term extension and that PTA is limited in that a grant of PTA cannot cause the patent’s term to exceed theexpiration date specified in a terminal disclaimer, pursuant to § 154(b)(2)(B). Cellect further asserts that, under the Board’s interpretation of § 154(b), any adjustment to related patents would invalidate them under ODP, and the only way to avoid wholesale invalidation of related patents would be to file preemptive terminal disclaimers. That,Cellect asserts, would be incompatible with and would fundamentally change continuations practice.
In addition, Cellect argues that legislativ e intent illustrates that PTE and PTA were meant to be mandatoryterm adjustment and extension provisions that restore patent term lost to different administrative delays. Cellectnotes that each statutory provision states that the extension “shall” be gr anted when particular conditions are met. 35 U.S.C. § 156(a) (stating that an extension “shall” be granted), 35 U.S.C. § 154(b)(1)(A), (b)(1)(B), and (b)(1)(C) (stating that “the term of the patent shall be extended”).
Cellect is supported by amici representing Biotechnology I nnovation Organization and Pharmaceutical Research and Manufacturers of America (“PhRM A”). Intellectual Property Owners of America, writing in Case: 22-1293 Document: 91 Page: 13 Filed: 08/28/2023IN RE : CELLECT , LLC 14

support of neither party, also urges reversa l of the Board’s decision.

The USPTO responds that, as a threshold matter, Cellect does not dispute that the challenged and reference patents are commonly owned, that the challenged patents expire after the reference patents, or that all challenged claims are patentably indistinct over claims in the reference patents. The USPTO further responds that statutory language and precedent clearly illustrate that PTA and PTE should be considered differently from each other when determining whether or not claims are unpatentable under ODP. In partic ular, the USPTO argues that, while an extensionpursuant to PTE is added to the patent term after a consideration of ODP, see Novartis

, 909 F.3d at 1375, an adjustment pursuant to PTA should be added to the patent term before a consideration of ODP. The U SPTO argues that our precedent and the statutory language are clear that PTE and PTA should be considered differently when analyzing ODP.

T he USPTO argues that precedent does not hold that ODP does not apply to patents with PTA. Citing AbbVie

,the USPTO asserts that, when a situation arises where related patents filed at the same time claim overlapping subject matter yet have different expirations due to PTA, ODP still applies to ensure that the applicant does not receive

an unjust timewise extension of patent term

. AbbVie , 764 F.3d at 1373. Further, the USPTO asserts that Novartis ’s statement that a judge

- made doctrine such as ODP cannot be used to cut off a statutorily granted term extension cannot be viewed in a vacuum, and it is limited to the appl ication of ODP to a patent with PTE. There is nothing in that case, the USPTO asserts, that suggests that it should be extended to hold that patents with extended terms due to PTA cannot be subject to ODP rejections. Case: 22-1293 Document: 91 Page: 14 Filed: 08/28/2023IN RE : CELLECT , LLC 15

T he USPTO also argues that the statu tory language is clear that terminal disclaimers cut short PTA but not PTE. In particular, the USPTO notes that § 154 mentions terminal disclaimers, but § 156 does not.
The USPTO further notes that while both statutory provisions indicate that an extensio n or adjustment “shall” be granted if various conditions are met

, 35 U.S.C. § 156(a ); 35 U.S.C. § 154(b)(1)(A), (b)(1)(B), and (b)(1)(C)

, the required conditions are limited by the presence of a terminal disclaimer in PTA but not PTE

, 35 U.S.C. § 154(b)(2) (B). That statutory difference, the USPTO contends, indicatesthat Congress intended to treat the two frameworks differently from each other . The USPTO asserts that differential treatment was confirmed in Merck

. The USPTO ’s position is supported by amici representing Alvogen PB Research & Development LLP, the Association for Accessible Medicines, and Samsung Electronics (Samsung Electronics Co., Ltd. and Samsung Electronics America, Inc.). We appreciate the several amicus briefs and have considered the views they expressed.
First, we note that an ODP determination depends on

an assessment of obviousness, i.e.

, whether the claims of a later- expiring patent would have been obvious over the claims of an earlier

- expiring patent owned by the same party

. If so, absent a terminal disclaimer, the later

- expiring claims are invalid. Application of that determination requires determining which is the later

- expiring patent, which is why the date whe n PTA or PTE is applied matters.

Proceedin g to the merits, w e agree with the USPTO that PTA and PT E should be treated differently from each other when determining whether or not claims are unpatentable under ODP. PTA and PTE are dealt with in different statutes and deal with differing circumstanc es. We conclude that, w hile the expiration date used for anODP analysis where a patent has received PTE is the expiration date before the PTE has been added, the expiration Case: 22-1293 Document: 91 Page: 15 Filed: 08/28/2023IN RE : CELLECT , LLC 16

date used for an ODP analysis where a patent has received PTA is the expiration d ate after the PTA has been added. To say that PTA and PTE should be factored into an ODP analysis in the same manner merely because they both provide statutorily authorized time extensions that restore patent term due to various administrative delays , as Cellect

argues, is an unjustified attempt to force disparate statutes into one.
ODP is a judicially created doctrine that has its roots in 35 U.S.C. § 101, which states that an inventor may obtain “a patent” ( i.e. , a single patent) for an invention. In re Lonardo , 119 F.3d 960, 965 (Fed. Cir. 1997). ODP “is intended to prevent a patentee from obtaining a time

- wise extension of patent for the same i nvention or an obvious modification thereof” and prevents an inventor from claiming a second patent for claims that are not patentably distinct from the claims of a first patent. Id . A crucial purpose of ODP is to prevent an inventor from securing a seco nd, later- expiring patent for non

- distinct claims

. This purpose applies equally to situations in which the later patents have received grants of PTA resulting from examination delays at the USPTO. AbbVie , 764 F.3d at 1373. Terminal disclaimers, which ma y be filed to overcome an ODP rejection assuming that the first patent has not yet expired, are provided for in 35 U.S.C. § 253 and 37 C.F.R. § 1.321. N o terminal disclaimers were filed by Cellect, and the patents at issue have all expired

, precluding any late filings of terminal disclaimers

. Our case precedent has clearly delineated how a patent that has received PTE, a statutorily authorized extension,interacts with ODP, a doctrine that limits the term of a patent or, at least, ties later

- filed, common ly owned, obvious variations to the expiration date of an earlier

- filed reference paten t. In Merck

, we held tha t PTE is not foreclosed by a terminal disclaimer. 482 F.3d at 132 2, 1324 . That holding was based on the fact that, while § 156 does not expressly reference terminal disclaimers, it provides for Case: 22-1293 Document: 91 Page: 16 Filed: 08/28/2023IN RE : CELLECT , LLC 17

other requirements that must be met to obtain a PTE and that the extension “shall” run from the expiration date of the patent, as adjusted under § 154(b) to account for any USPTO delays

. Id. at 1321

– 22. We noted that § 154(b)(2)(B) expressly excludes patents in which a terminal disclaimer was filed from the benefit of a term adjustment beyond that disclaimed date for delays caused by the USPTO, but that no similar prohibition existed i n § 156. Id. at 1322. We therefore concluded that the calculation of a grant of PTE on a patent that has a terminal disclaimer “is from the expiration date resulting from the terminaldisclaimer and not from the date the patent would have expired in the absence of the terminal disclaimer.” Id. at 1322

– 23.
The holding in Merck is premised on the fact that § 154 contains requirements separate and distinct from those in § 156 that indicate a congressional intent to speak to terminal disclaimers and ODP in t he context of PTA . We extended this logic in Novartis , where we held that ODP does not invalidate a validly obtained PTE. 909 F.3d at 1373.There, we noted that, “if a patent, under its original expiration date without a PTE, should have been (but was n ot) terminally disclaimed because of [ODP], then this court’s[ODP] case law would apply, and the patent could be invalidated,” but that “if a patent

. . . is valid under all other provisions of law, then it is entitled to the full term of its PTE

. ” I d. at 1374
Together, Merck and Novartis establish that ODP for a patent that has received PTE should be applied based onthe expiration date (adjusted to a disclaimed date if a terminal disclaimer has been filed) before the PTE is added

, so long as the extended patent is otherwise valid without the extension . For the first tim e, here , we address how another statutorily authorized extension, PTA, interacts with ODP. Even though both PTA and PTE are statutorily authorized extensions, and each serves to recover lost term, Case: 22-1293 Document: 91 Page: 17 Filed: 08/28/2023IN RE : CELLECT , LLC 18

each has its own independent framework established through an independent statutory schema.

Cellect relies heavily on Novartis for its argument that any statutorily mandated extension, including PTA and PTE, cannot be cut short by a judge

- made doctrine like ODP. But th at is not an accurate reading of that holding. In Novartis , we held that the presence of ODP would not cut off a duly granted PTE under § 156. Stated otherwise,whether or not claims are unpatentable for ODP is determ ined in view of the expiration date of the patents before any PTE is added. In Novartis , we merely “decline [d] ” to allow “a judge

- made doctrine [to] cut off a statutorily

- authorized time extension.” Novartis , 909 F.3d at 1375

. But there is no conflict b etween ODP and § 154. The PTE and PTA statutes have quite distinct purposes . PTE is designed to effectively extend the overall patent term for a single invention due to regulatory delays in product approval. PTA is designed to extend the term of a parti cular patent due to delays in the processing of that patent. There is nothing in the PTA statute to suggest that application of ODP to the PTA

- extended patent term would be contrary to the c ongressional design. Indeed, Cellect’s interpretation of the PTA statue would effectively extend the overall patent term awarded to a single invention contrary to Congress’s purpose by allowing patents subject to PTA to have a longer term than the reference patent

. The USPTO’s approach merely recognizes the distinct p urposes and interpretation of the two statutes. It does not allow a judge

made doctrine to restrict the scope of the PTA statute.
As the USPTO argues, our case law and the statutory language dictate an outcome where an ODP analysis must be performed on patents that have received PTA based on the expiration date including PTA

. In AbbVie , we held that ODP continues to apply where two patents that claim the same invention have different expiration dates, including where the different expiration date is due to a grant of PTA. 764 F.3d at 137 3– 74

. Here, we have related patents that Case: 22-1293 Document: 91 Page: 18 Filed: 08/28/2023IN RE : CELLECT , LLC 19

claim priority from the same application that, as conce ded by Cellect, claim overlapping subject matter and that have different expiration dates only because of PTA. Thus, under AbbVie , ODP still applies to ensure that the applicant is not receiving an unjust extension of time

. While Merck and Novartis do not directly govern this

case because they address PTE

, they inform our analysis because they recognize the differences between PTA and PTE.

In Merck and Novartis , the holdings were premised on meaningful and substantive differences evincing a clear

congress ional intent to constitute PTE and PTA as different statutory frameworks. In particular, those cases set forth how § 154 clearly states that PTA “shall” be granted when certain requirements are met

. 35 U.S.C. § 154(b)(1)(A), (b)(1)(B), and (b)(1)(C). Bu t those requirements include limitations that are separate and distinct from those in the PTE framework, including the inabilityto extend a term past any date in a filed terminal disclaimer. Compare 35 U.S.C. § 154(b)(2)(B) with 35 U.S.C. § 156(c)(3), and (g)(6) (providing for statutory limitationson length of PTE and number of patents that can be extended)

. In addition

, while § 154(b)(2)(B)’s provision regarding terminal disclaimers is not directly applicable to the present case since non e were filed, it remains critical in our analysis of the statute

. Section 154(b)(2)(B) provides that“No patent the term of which has been disclaimed [pursuant to 35 U.S.C. § 253] beyond a specified date may be adjusted under this section beyond the expir ation date specified in the disclaimer.” Cellect ha d the opportunity to file terminal disclaimers in this case during both prosecution and ex parte reexamination

. And, of course, the examiners had the opportunity, and perhaps the obligation, to reject ce rtain of the pending claims , but they did not do so. Case: 22-1293 Document: 91 Page: 19 Filed: 08/28/2023IN RE : CELLECT , LLC 20

Terminal disclaimers are provided for in 35 U.S.C. § 253(a), which, in relevant part, provides that “A patentee, whether of the whole or any sectional interest therein, may, on payment of the fee requ ired by law, make disclaimer of any complete claim, stating therein the extent of his interest in such patent.” Title 37 of the Code of Federal Regulations, § 1.321 includes information on what a terminal disclaimer must include to be effective. 37 C.F.R

. § 1.321. In particular, the regulation provides that a patentee may disclaim any complete claim or claims in a patent, id. § 1.321(a), or may disclaim or dedicate to the public the entire term, or any terminal part of the term, of a patent to be granted, id . § 1.321(b), (c).
Terminal disclaimers are almost always filed to overcome an ODP rejection, so terminal disclaimers and ODP remain inextricably intertwined. See Boehringer Ingelheim Int’l GmbH v. Barr Lab’ys , Inc. , 592 F.3d 1340, 1346 (Fed. Cir. 2010). As the Board state d, ODP and terminal disclaimers are “two sides of the same coin: the problem and the solution.” J.A. 37. Given the interconnection of ODP and terminal disclaimers as “two sides of the same coin,” J.A. 37

, the statutory recognition of the binding power of terminal disclaimers in § 154(b)(2)(B) is tantamount to a statutory acknowledgement that ODP concerns can arise when PTA results in a later- expiring claim that is patentably indistinct.

Terminal disclaimers we re the solution to the problems created by the multiple challenged patents. If terminal disclaimer s had been filed in this case, the provisions of § 154(b)(2)( B ) would have come into play. Congress intended that, when a terminal disclaimer has been enteredin a patent subject to PTA, no patent (or claim) may be extended beyond the disclaimed expiration date. Accordingly , in the absence of such disclaimers, it would frustrat e the clear intent of Congress for applicants to benefit fromtheir failure, or an examiner’s failure, to comply with established practice concerning ODP, which contemplates Case: 22-1293 Document: 91 Page: 20 Filed: 08/28/2023IN RE : CELLECT , LLC 21

terminal disclaimers as a solution to avoid invalidation of patents claiming obvio us inventions

, as we have here

.We thus conclude that ODP for a patent that has received PTA, regardless whether or not a terminal disclaimer is required or has been filed, must be based on the expiration date of the patent after PTA has been adde d. We therefore further conclude that the Board did not err in finding the asserted claims unpatentable under ODP.

II
We next consider Cellect’s challenge to the Board’s determination that equitable concerns underlying ODP, including an improper timewise extens ion of a patent term and potential harassment by multiple assignees

, are present in this case.
Cellect argues that the equitable concerns underlying ODP, including an improper timewise extension of a patent term and potential harassment by multiple assi gnees, do not exist in this case. Cellect asserts that the Board cannotand does not point to any evidence that Cellect has purposely manipulated the system to delay the issuance of thechallenged patents to improperly extend their term. Cellect further asserts that it has never and will never split its patents among multiple owners, and thus the risk of claim splitting or harassment by multiple litigants is entirelyspeculative. Cellect contends that the use of ODP to invalidate related patents with sha red expiration dates basedon an alleged nonexistent risk of divided ownership is improper. The USPTO responds that the Board’s decision is properly grounded in the public policy surrounding ODP.The USPTO asserts that the Board did not err in determini ng that Cellect received an unjustified timewise extensionof its patent terms and that it does not matter how the unjustified extensions are obtained. The USPTO further asserts that gamesmanship is not the only issue , and that the Case: 22-1293 Document: 91 Page: 21 Filed: 08/28/2023IN RE : CELLECT , LLC 22

mere presence of an unj ustified extension is sufficient for the Board to find that claims are unpatentable under ODP. The USPTO further asserts that the Board did not err in determining that a risk of separate ownership existed (from, for example, creditors dividing the patents after a potential bankruptcy proceeding), or in determining that a terminal disclaimer would have been required to ensure continued common ownership even if the patents had the same expiration date. The USPTO also asserts that theBoard did not err in finding Cellect’s declaration not to assign the patents insufficient.
We agree with the USPTO that the Board did not err in determining that Cellect received unjustified extension s of patent term. Neither Cellect nor the USPTO disputes that the asserted cl aims in the challenged patents would have been obvious variations of the respective claims in the invalidating ODP references. The obviousness of the asserted claims in each of the challenged patents can be traced back to the ’036 patent. That is the onl y patent inthe family that did not receive a grant of PTA and that expired on October 6, 2017, twenty years from the date on which the priority application was filed. Therefore, any extension past that date constitutes an inappropriate timewise extension for the asserted claims of the challenged patents. To hold otherwise would

, in effect

, confer on the reference claims of the ’036 patent PTA to which they were not entitled

. We do, however, note that the non

- asserted claims in the challenged patents are entitled to their full term, including the duly granted PTA

, unless they are found to be later

- filed obvious variations of earlier

- filed, commonly owned claims. We have no basis for consideration of that issue here.
We also agree with the USPTO that the Board did noterr in determining that a risk of separate ownership existed and, even in the absence of separate ownership, that a terminal disclaimer would have been required to ensure common ownership. As the Board f ound, the patents Case: 22-1293 Document: 91 Page: 22 Filed: 08/28/2023IN RE : CELLECT , LLC 23

expired fewer than six years ago, so the risk remains for multiple assignees to seek past damages. While Cellecthas not engaged in actions that resulted in divided ownership in the past, and it has promised that it will not do so in the future , n either fact suffices to abrogate the potential future risk of multiple owners or assignees. Promises do not substitute for sound applications of rules of law.
Cellect argues that, because it acted in good faith and because the grant of PTA tak es into account any actions on the part of the applicant that may exacerbate the USPTO’s delay, 35 U.S.C. § 154(b)(2)(C), it should not lose out on the grant of extra term that is required by statute. But there is no basis for an examiner to inquir e into the intent of an applicant , or credit it . The ability of the applicant to show good faith during prosecution does not entitle i t to a patent term to which it otherwise is not entitled. An applicant’s ability to show that it did not engage in gamesmanship in obtaining a grant of PTA is not sufficient to overcome a finding that it has received an unjust timewise extension of term.

III
We finally consider Cellect’s challenge to the Board’s determination that the ex parte reexamination proceedings raised a s ubstantial new question of patentability.
Cellect argues that there was no substantial new question of patentability present in the underlying reexaminations, so the reexaminations were improper. In particular, Cellect asserts that the same e xaminer ana lyzed all the challenged and reference patents, and was therefore awareof them, yet did not issue any ODP rejections during prosecution, despite issuing ODP rejections during the prosecution of other Cellect

- owned applications that he examined. Cellect a sserts that the Board artificially created a substantial new question of patentability by second

guessing the e xaminer’s judgment. Case: 22-1293 Document: 91 Page: 23 Filed: 08/28/2023IN RE : CELLECT , LLC 24

Cellect further argues that, even if we affirm the Board’s holding that an ODP analysis for a patent that has received PTA is based on the expiration date including PTA, only the adjustment period, not the entire patent term, should be considered for invalidation.
The USPTO responds that the Board correctly determined that the reexamination requests raised a substantial new question of patentability because there is no indication that the e xaminer raised ODP as a relevant issue during the prosecution of the challenged patents. The USPTO further contends that the e xaminer’s knowledge of the reference patents and ODP rejection in other applications is not sufficient to find that ODP was actually considered and decided by the e xaminer during prosecution of the challenged patents

. The USPTO also responds that Cellect’s request only to invalidate any granted adjustment period rat her than the entire patent term wa s waived, as it was not raised before the Board. Even if it wa s not waived, the USPTO asserts that invalidating only the adjustment would be
tantamount to issuing a retroactive terminal disclaime r , which would be improper

.We agree with the USPTO that the Board’s determination that the reexamination requests raised a substantial new question of patentability was supported by substantial evidence. Cellect’s arguments lack merit and amount to little more than attempting to prove a negative. T he e xaminer’s willingness to issue ODP rejections of claims in other Cellect- owned patent applications but not in the challenged patents and his knowledge of the reference patents do not affirmatively indicate that he considered ODP here

. Further, “[t]he existence of a substantial new question of patentability is not precluded by the fact that a patent or printed publication was previously cited by or to the [USPTO] or considered by the [USPTO].” 35 U.S.C. § 303 (a) . And, as the Board notes, neither party points to Case: 22-1293 Document: 91 Page: 24 Filed: 08/28/2023IN RE : CELLECT , LLC 25

anything in the prosecution history that affirmatively indicates that the e xaminer considered whether or not an ODP rejection should be made

. We thus conclude that the Board’s findings were supported by substantial evidence and that a substantial new question of patentability was present in the underlying ex parte reexaminations.
A substantial new question of patentability requires just that

— a substantial new question. Here , where Cellect itself does not indicate a single portion of the prosecution history explicitly showing that the e xaminer considered ODP, the threshold for showing a substantial new question has been me t. The fact that this case is before us here without terminal discla imers having been required itself strongly suggests that the examiner did not consider the issue.
We also agree with the USPTO that the question of invalidation of only the adjustment period raised by Cellect on appeal is forfeited, as it was not raised before the Board.We further agree with the USPTO that, even if not forfeited, invalidation of only the adjustment would be tantamount to granting a retroactive terminal disclaimer, tying the expiration of the later

- filed claims to the earlier

- filed refe rence claims. A terminal disclaimer is not an escape hatch to be deployed after a patent expires. Cellect had the opportunity to file terminal disclaimer s during prosecution, even in the absence of an ODP rejection, yet it declined to do so . Now the cha llenged patents have expired,and the opportunity has passed. Invalidating only the adjusted term would in effect give Cellect the opportunity to benefit from terminal disclaimer s that it never filed.

C ONCLUSION We have considered Cellect’s remaining a rguments butfind them unpersuasive. For the foregoing reasons, the decision of the Board is affirmed.

AFFIRMED Case: 22-1293 Document: 91 Page: 25 Filed: 08/28/2023