Ex Parte POLLNER et alDownload PDFPatent Trial and Appeal BoardSep 17, 201813164605 (P.T.A.B. Sep. 17, 2018) Copy Citation UNITED STA TES p A TENT AND TRADEMARK OFFICE APPLICATION NO. FILING DATE 13/164,605 06/20/2011 13837 7590 09/19/2018 Alston & Bird LLP/ Gen-Probe Incorporated Bank of America Plaza 101 South Tryon Street, Suite 4000 Charlotte, NC 28280-4000 FIRST NAMED INVENTOR Reinhold B. POLLNER UNITED STATES DEPARTMENT OF COMMERCE United States Patent and Trademark Office Address: COMMISSIONER FOR PATENTS P.O. Box 1450 Alexandria, Virginia 22313-1450 www .uspto.gov ATTORNEY DOCKET NO. CONFIRMATION NO. GPl 79-03.DVl 2096 EXAMINER POHNERT, STEVEN C ART UNIT PAPER NUMBER 1634 NOTIFICATION DATE DELIVERY MODE 09/19/2018 ELECTRONIC Please find below and/or attached an Office communication concerning this application or proceeding. The time period for reply, if any, is set in the attached communication. Notice of the Office communication was sent electronically on above-indicated "Notification Date" to the following e-mail address(es): usptomail@alston.com patentdept@hologic.com PTOL-90A (Rev. 04/07) UNITED STATES PATENT AND TRADEMARK OFFICE BEFORE THE PATENT TRIAL AND APPEAL BOARD Ex parte REINHOLD B. POLLNER, MICHAEL M. BECKER, and MEHRDAD R. MAJLESSI Appeal2017-005716 Application 13/164, 605 Technology Center 1600 Before MICHAEL J. FITZPATRICK, ULRIKE W. JENKS, and DAVID COTTA, Administrative Patent Judges. JENKS, Administrative Patent Judge. DECISION ON APPEAL Pursuant to 35 U.S.C. § 134(a), Appellants 1 appeal from the Examiner's decision to reject claims as indefinite and obvious. We have jurisdiction under 35 U.S.C. § 6(b). We AFFIRM. STATEMENT OF THE CASE Claims 16, 18, 19, 21-26, 28, 29, 31-34, 37, and 38 are on appeal, and can be found in the Claims Appendix of the Appeal Brief. Claim 16 is representative of the claims on appeal, and reads as follows: 1 Appellants identify the real party in interest as Gen-Probe Incorporated. Br. 2. Appeal2017-005716 Application 13/164,605 16. A hybridization mixture for capturing a target nucleic acid, the mixture comprising imidazole at a concentration from 0.05 M to 4.2 M, at least one target nucleic acid, at least one capture probe comprising a target-specific region complementary to a target sequence in the target nucleic acid and an immobilized probe-binding region, and an immobilized probe complementary to the immobilized probe-binding region of the capture probe, wherein the mixture is at a temperature of about 85°C to 95°C. Appeal Br. 13 (Claims Appendix)(emphasis added). The only other independent claim, claim 28, recites the same limitations but uses a different imidazole concentration, specifically, "imidazole at a concentration of about 1.7 M to 2.7 M." Id. at 14. Appellants request review of the following grounds of rejection made by Examiner: I. Claims 16, 18, 19, 21-26, 28, 29, 31-34, 37, and 38 under 35 U.S.C. § 112, second paragraph. II. Claims 16, 18, 19, 21-26, 28, 29, 31-34, 37, and 38 under 35 U.S.C. § 103(a) as unpatentable over the combination of Weisburg2 and Eli. 3 I. Indefiniteness The Patent Office applies the broadest reasonable claim interpretation standard in proceedings. Cuozzo Speed Tech., LLC v. Lee, 136 S. Ct. 2131, 2145 (2016). Examiner interprets the claims to be drawn to a product. See 2 Weisburg et al., US 6,280,952 Bl. Issued Aug. 28, 2001 ("Weisburg"). 3 Eli et al., Characterization of Imidazole as a DNA Denaturant by Using TGGE of PCR Products from a Random Pool of DNA, 125 J. Biochem. 790- 794 (1999)("Eli"). 2 Appeal2017-005716 Application 13/164,605 Ans. 25; see Final Act. 11, 13. Appellants contend "that physical properties of a composition, such as temperature," must be considered as well in comparing the properties of the composition to the prior art. Appeal Br. 12. Claims 16 recites a preamble: "[a] hybridization mixture for capturing a target nucleic acid." "Where ... a patentee defines a structurally complete invention in the claim body and uses the preamble only to state a purpose or intended use for the invention, the preamble is not a claim limitation." Rowe v. Dror, 112 F.3d 473,478 (Fed. Cir. 1997); IMS Tech., Inc. v. Haas Automation, Inc., 206 F.3d 1422, 1434 (Fed. Cir. 2000) ("If the preamble adds no limitations to those in the body of the claim, the preamble is not itself a claim limitation and is irrelevant to proper construction of the claim."). Upon consideration of the evidence and Appellants' contentions, we agree with Examiner that claim 16 is directed to a product. The body of the claim defines a structurally complete composition, a mixture, which includes: imidazole, a target nucleic acid, a capture probe, and an immobilized probe. Because the body of the claim defines a structurally complete invention, the claim preamble does not add any limitations to the body of the claim and therefore is not considered part of the claimed composition. The claim additionally recites "wherein the mixture is at a temperature of about 85°C to 95°C." Examiner finds it unclear what the "wherein" clause recited in claim 16 (and claim 28) intends to achieve. Final Act. 4. Specifically, it is unclear if the intent is that the temperature of the component mixture needs to be between 85-95°C to meet the limitation or if 3 Appeal2017-005716 Application 13/164,605 this limitation indicates that the capture probe is designed to work at a temperature between 85-95°C. Final Act. 4; Ans. 3--4. Appellants contend that one of ordinary skill would understand that the composition is being claimed at the stated temperature, "and would have no difficulty in ascertaining whether a composition was within such a range by use of a thermometer or similar instrument." Appeal Br. 6. With respect to the temperature limitation, we agree with Appellants that there is no difficulty in measuring the temperature of a component mixture by using, for example, a thermometer. We note that claim 16, however, does not recite any duration for how long the mixture needs to remain at the recited temperature. Claim 16 also does not recite any limitations on the interactions of the various components at the recited temperature. All that is required to meet the temperature limitation of claim 16, is that the component mixture at some point in time, even if just temporarily, touches this range. Examiner notes the Specification does not provide a limiting definition of "about." Ans. 5. Examiner interprets the limitation "about" as encompassing temperatures plus or minus 20%. Ans. 5; Final Act. 5. Appellants contend that the term "about" should be construed in such a way that it encompasses "insubstantial variation from either end of the range not having any material effect on the properties of the composition." Appeal Br. 6; see Reply Br. 2. 4 Appellants contend that this limitation 4 Appellants state that the Examiner refused to enter an amendment deleting the term "about" and note that they remain willing "to make the amendements previously offered or any other reasonable amendments that may be proposed by the Examiner to remove issues for appeal. Reply Br. 2. We limit our consideration to the claim before us and do not consider 4 Appeal2017-005716 Application 13/164,605 should not be construed "as encompassing variations exceeding 50% of the recited range so as to overlap with the range of Eli." Appeal Br. 11. The Specification provides that the temperature range of the preferred embodiments includes relatively mild conditions "which may be used at room temperature or heated for a short time, e.g., about 60-95 °C for 15 minutes or less." Spec. 9. "Assays performed with imidazole in the target capture reaction incubated at lower temperatures (25°C to 42°C) typically resulted in less total detectable signal compared to target capture assays performed using the same capture probe in a reaction mixture without imidazole incubated at higher temperature ( 60°C)." Spec. 11. The Specification demonstrates that the temperature can vary greatly and still produce the desired effect of capturing nucleic acid even if at lower efficiency. The Specification suggests that variations as great as 20% temperature have no material effect on the composition's components. However, we need not determine the precise numerical variance encompassed within the claim term "about." For purposes of our discussion, it is sufficient that "about 85°C to 95°C" encompasses the prior art range disclosed in Eli- between 75°C and 80°C. amendments not entered because a refusal to enter an amendment is a petitionable matter under 3 7 C.F .R. § 1.181 and not within the jurisdiction of the Board. 37 C.F.R. § 1.127 (2011); In re Berger, 279 F.3d 975,984 (Fed. Cir. 2002) (citing In re Hengehold, 440 F.2d 1395, 1403-1404 (CCPA 1971).) 5 Appeal2017-005716 Application 13/164,605 Examiner's position is that "[t]he term 'target-specific region complementary' and an [']immobilized probe complementary' in claim 16 [are] relative term[ s] which render[] the claim indefinite. The term 'complementary' is not defined by the claim[s], and the [S]pecification does not provide a standard for ascertaining the requisite [base pair match between nucleic acid sequences. Therefore,] one of ordinary skill in the art would not be reasonably apprised of the scope of the invention." Final Act. 3 ( citing Ex parte Miyazaki, 89 USPQ2d 1207 (BPAI 2008) ( expanded panel); see Ans. 2. In other words, it is not clear what level of "complementary" is required to meet this claim limitation. Final Act. 4. Appellants contend that the Specification and indeed the claims recite the purpose of the composition which is to capture the target nucleic acid. Appeal Br. 5. Appellants note that the length of sequence that needs to be complementarity depends on the GC content of nucleic acids and hybridization conditions provided. Id. Findings of Fact FF 1. The Specification provides: "Hybridization conditions" refer to the cumulative physical and chemical conditions under which nucleic acid sequences that are completely or partially complementary form a hybridization duplex or complex, usually by standard base pairing. Such conditions are well known to those skilled in the art, are predictable based on sequence composition of the nucleic acids involved in hybridization complex formation, or may be determined empirically by using routine testing ( e.g., Sambrook et al., Molecular Cloning, A Laboratory Manual, 2nd ed. (Cold Spring Harbor Laboratory Press, Cold Spring Harbor, NY, 1989)[)]. Spec. 7: 18-23. 6 Appeal2017-005716 Application 13/164,605 Analysis Temperature is a physical conditions that affects when one nucleic acid sequence will hybridize to another nucleic acid sequence containing a complementary sequence. See FF 1. Claim 16 recites three different nucleic acid structures. Two of the nucleic acid structures, the target nucleic acid and the immobilization probe, bind to the third structure, the capture probe. Claim 16 also recites a temperature, requiring that "the mixture is at a temperature of about 85QC to 95QC." The problem is that claim 16 does not make clear whether the recited temperature applies to binding: 1) the target nucleic acid with the complementary region of the capture probe, 2) the immobilization probe with the complementary region of the capture probe, or 3) both the target nucleic acid and the immobilization probe with the complementary region of the capture probe. 5 Given this ambiguity, it is not possible to determine whether the recited nucleic acid structures are complementary to each other as required by the claims. Therefore, we agree with Examiner that the "complementarity" limitation recited in the claim is not clear. Specifically, it is not clear if the 5 The Specification recognizes that the hybridization of the target nucleic acid sequence to the capture probe may occur at a different temperature than the hybridization of the capture probe to the immobilization probe. See, Spec. 9 ("In preferred embodiments, hybridization conditions include a soluble denaturant chemical in the mixture that contains the capture probe and target nucleic acid and incubation of the mixture at 60°C to 95°C, preferably 75°C to 95°C, for about 15 min or less to permit formation of a hybridization duplex of the capture probe and target nucleic acid, followed by incubation at a lower temperature (e.g., about 25°C to 42°C) to permit formation of a hybridization complex made up of the target nucleic acid, capture oligomer, and immobilized probe."). 7 Appeal2017-005716 Application 13/164,605 probes need to bind at a particular temperature, and if so which probes need to bind at that temperature. See Final Act. 3. Therefore, we agree with Examiner's conclusion that the term "complementarity" as recited in the claim 16 is indefinite. We affirm the rejection of claim 16 is being indefinite. Claims 18, 19, 21-26, 28, 29, 31-34, 37, and 38 were not separately argued and fall with claim 16. II. Obviousness over Weisburg and Eli The issue is: (1) does the preponderance of evidence of record support Examiner's conclusion that the claims are obvious in light of the cited references, and (2) if so do Appellants present sufficient rebuttal evidence of unexpected results to overcome the prima facie case of obviousness? Findings of Fact FF2. Weisburg teaches a polynucleotide capturing method: The method includes the steps of incubating a mixture comprising a target polynucleotide, a capture probe, and an immobilized probe in a first hybridization condition that favors formation of a capture probe:target hybridization complex that includes the capture probe and the target polynucleotide, wherein the first hybridization condition disfavors formation of an immobilized probe:capture probe hybridization complex that includes the immobilized probe and the capture probe; and then incubating the mixture in a second hybridization condition that favors formation of the immobilized probe:capture probe hybridization complex, thereby capturing the target polynucleotide in an immobilized probe:capture probe:target hybridization complex that includes the immobilized probe, the capture probe and the target polynucleotide. 8 Appeal2017-005716 Application 13/164,605 Weisburg 2:9--23. FF3. W eisburg teaches that "the first incubating step uses a temperature below a Tm of the capture probe:target hybridization complex and above a Tm of the immobilization probe:capture probe hybridization complex, and the second incubating step uses a temperature below a Tm of the immobilization probe: capture probe hybridization complex." Id. 2:24--29. Weisburg's preferred embodiments teach temperatures of about 60°C to 40°C or lower. See id. 2:41-34. FF4. Weisburg teaches "Tm can be predicted using standard calculations and measured using routine testing techniques well known in the art." Id. 16:5-7 (citing Sambrook et al., Molecular Cloning, A Laboratory Manual, 2nd ed. (Cold Spring Harbor Laboratory Press, Cold Spring Harbor, N.Y. 1989)). FF5. Weisburg teaches that using temperature changes in order to change hybridization conditions is compatible with automation. See id. 16:24--26. "However, any known method of lowering the stringency of a hybridization condition, such as by increasing the ionic strength of the solution or diluting the solution with denaturants, may be used to achieve the second hybridization condition." Id. at 16:33-38. FF6. Eli teaches "that imidazole can destabilize the double-stranded form of DNA just like urea and formamide." Eli at 790. "1 M, imidazole lowered the melting temperature (Tm) of DNA by 13±2°C.". Id. Abstract, 794. Eli uses temperature gradient gel electrophoresis with a temperature gradient from about 30 to 80°C. "[W]e performed TGGE in which both the gel and running buffer contained 0.1, 0.3, 1.0, or 3.0 M imidazole." Id. 793. 9 Appeal2017-005716 Application 13/164,605 Principle of Law "[T]he patentability of ... composition claims depends on the claimed structure, not on the use or purpose of that structure." Catalina Mktg. Int'!, Inc. v. Coo/savings.com, Inc., 289 F.3d 801, 809 (Fed. Cir. 2002). Analysis To summarize, Examiner finds that Weisburg teaches an assay that utilizes two hybridization conditions in order to capture and isolate a target nucleic acid. The first hybridization condition allows for the capture probe to bind to the target polynucleotide and the second hybridization condition allows for hybridization between the capture probe and an immobilized probe. Final Act. 6; Ans. 5; FF2-FF3. Examiner finds that Weisburg also teaches the use of denaturants. Final Act. 6; FF5. Examiner finds that Weis burg teaches that the melting temperature of hybridization complexes is affected by the length and degree of complementarity between two nucleic acid sequences and that the stability of a complex can be readily calculated. See Final act. 7-8, see id. at 8 ("For example, G:C pairing is stronger than A:T pairing, due to more hydrogen bonds in G:C pairs"); see Ans. 7; FF4. Examiner finds that "W eisburg teaches the method of the invention alters Tm and hybridization conditions. W eisburg teaches these alterations include the use of denaturants." Ans. 5. Examiner acknowledges that "W eisburg does not specifically teach the use of imidazole" and relies on Eli for this teaching. Final Act. 9; Ans. 8. Eli teaches that imidazole is a stronger denaturant of DNA then urea. Ans. 9; FF6. Examiner concludes that it would have been obvious to substitute one denaturant for another. See 10 Appeal2017-005716 Application 13/164,605 Final Act. 10 ("Weis burg further suggests the use of denaturants, while Eli demonstrates that imidazole is known as a strong denaturant"); see Ans. 10. Examiner interprets the claim to be a product claim and finds that the recitation of "wherein the mixture is at a temperature of about 85°C to 95°C" is a description of the intended use, while a product is analyzed based on the structure. See Final Act. 11. We agree that claim 16 is directed to a product (see above I.). Based on this interpretation Examiner concludes that the combined references provide the requisite components and suggests the addition of imidazole as a suitable denaturant to arrive at the presently claimed invention. Final Act. 10-11. Appellants contend that Examiner's prima facie case is in error because limiting the claim to only consider "structural properties and that anything relating to its use is irrelevant [ ] is not completely accurate statement of the relevant law." Appeal Br. 9. We are not persuaded. The patentability of a composition claim is based on the structure claimed, not on how that structure is used. See Catalina 289 F.3d at 809. Here, the claims are directed to a composition, a hybridization mixture that is at a temperature between 85-95°C. As discussed above (see above I.), we agree with Examiner that hybridization between the various nucleic acid components is not required by the composition as claimed, all that is required is that these components are mixed together and that these components are brought to the recited temperature, even if only temporarily. In other words, there is no requirement in the claim that these components function in a particular way. Examiner finds that the temperature "does not inherently change the structure of the composition." See Final Act. 12. In other words, prior art 11 Appeal2017-005716 Application 13/164,605 compositions taught by W eisburg and Eli can readily be brought to a temperature between 85-95°C without any detrimental effect to the individual components. Appellants contend that "'about' is properly construed as indicating an insubstantial variation from the express range of 85°-95°C and should not therefore be construed, as by the Examiner, as encompassing variations exceeding 50% of the recited range so as to overlap with the range of Eli." Appeal Br. 11. We are not persuaded. As discussed above (see above I.), Examiner finds that "Eli demonstrates that imidazole is known as a strong denaturant that can be used between 75°C and 80, which is about 85°C." Final Act. 10; Ans. 10. We agree that the term "about" in the context of the recited hybridization mixture encompasses Eli's disclosed temperature range, and further agree that the combination of W eisburg and Eli renders the claims obvious. Appellants do not direct us to support in the Specification that describes how to ascertain an insubstantial variation in the context of heating a hybridization mixture. Indeed, the Specification shows that the hybridization mixture in an assay works in a temperature range from 60 to 95°C. Specification figure 1; see id. 18, table 1 and 2. Given this disclosure in the Specification, we find that the Examiner has reasonably interpreted that the temperature range of "about 85°C to 95°C" overlaps with the disclosure in Eli. Final Act. 1 O; Ans. 1 O; FF6. In reaching the temperature limitation of the claim, Examiner alternatively relies on ranges that do not overlap but are close enough that one of skill in the art would have thought they would have the same properties. See Ans. 9 ( citing Titanium Metals Corp. of Amer. v.Banner, 778 12 Appeal2017-005716 Application 13/164,605 F.2d 775, 227 USPQ 773 (Fed. Cir. 1985). As we understand Examiner's position, the temperature disclosed in Eli for denaturing DNA at about 80°C, which is close enough to the presently claimed range of about 85-95°C temperature, would render DNA denaturation at higher temperatures obvious. We agree with the Examiner that one of ordinary skill in the art would have understood that further increasing the temperature of an already denatured product would result in a product that remains denatured. We conclude that the evidence of record cited by Examiner supports a prima facie case of obviousness with respect to claim 16. Next we address Appellants' secondary considerations arguments. Appellants contend that even if a prima facie case was made by the Examiner, "the unexpected property supports patentability not only of the method of detection but the composition used in the method of detection." Appeal Br. 10, see id. 3 ( citing Example 5 "Despite these failures of imidazole at low temperature, 85° to 95 °C temperatures generated unexpectedly stellar results the 86 to 100% positive range for all three tested strains"); see id. 4 (citing "rule 132 declarations by Dr. Reinhold Pollner originally filed in the parent patent, US 7,993,853 on March 7, 2008, December 19, 2008, and April 1, 2010"). "Neither Weisburg nor Eli recognizes the fundamental problem the use of imidazole in combination with high temperature addresses, namely a reduction in sensitivity due to the presence of secondary or tertiary structure in target nucleic acids." Reply Br. 4. Examiner explains that Appellants' arguments are not considered persuasive because even if the "wherein clause" of claim 16 is interpreted as being a structural limitation of the claim, "the claim requires only one 13 Appeal2017-005716 Application 13/164,605 temperature" while the evidence presented requires two different temperatures to arrive at the test results. Ans. 11. Examiner finds Declaration- I 6 unpersuasive because "the declaration does not use any denaturant in the assay and thus the assertion of improved result is not unexpected, but an expected result." Ans. 1 7. Examiner finds that Declaration-I "identifies the method alleged to provide an unexpected result requires the use of specific capture and immobilized probes as well as temperatures in addition to those of the claim. Thus the alleged unexpected result is not consistent with the pending claim." Ans. 16. As discussed above (see I.), we agree with Examiner that the claims do not require any particular level of hybridization and therefore the disclosures that rely on a particular methodology using a particular set of probes is not commensurate in scope with the claims. As our reviewing court has explained, it is well settled that "[ e ]vidence of secondary considerations must be reasonably commensurate with the scope of the claims. . . . This does not mean that an applicant is required to test every embodiment within the scope of his or her claims." In re Kao, 639 F.3d 1057, 1068 (Fed. Cir. 2011). Rather, "[i]f an applicant demonstrates that an embodiment has an unexpected result and provides an adequate basis to support the conclusion that other embodiments falling within the claim will behave in the same manner, this will generally establish that the evidence is commensurate with scope of the claims." Id. Here, to the extent that any results are unexpected, they are not commensurate in scope with the much broader recitation of claim 16. As discussed above (see above I.), the claims 6 Declaration under 37 CPR 1.132 by Reinhold B. Pollner, Ph.D, signed March 7, 2008 ("Declaration-I"). 14 Appeal2017-005716 Application 13/164,605 recite a mixture of a variety of components at a particular temperature. There is no requirement in claim 16 that the combination actually achieve a particular result. Interpreting the claims as requiring a particular level of hybridization impermissibly reads limitations from the Specification into the claims. The composition as claimed can be completely denatured and still fall within the scope of the claim. Accordingly, we agree with Examiner that the evidence presented in the declaration is not commensurate in scope with the present claims and, therefore, is insufficient to overcome the prima facie case of obviousness. Examiner finds that "Weisburg teaches heating and the presence of detergent (see example 3) as well as denaturant. The using [ofJ detergent alone is beyond the scope of the claims." Ans. 18 ( citing Weisberg Example 3). Examiner also finds Declaration-2 7 unpersuasive because it shows "that [either] heat or imidazole alone do[ es] not work" and it is only when they are applied in combination that the process captures more target nucleic acid, but this does not establish that this combination is more sensitive "than heat and the use of another denaturant." Ans. 18. Examiner acknowledges that Declaration-3 8 "compares imidazole with a known denaturant, formamide, which unlike imidazole, is commonly included in hybridization mixtures." Ans. 19. Examiner nevertheless finds that the data in Declaration-3 is also not persuasive because it relies on the use of "specific probes and appear[ s] to require an additional temperature to those of the 7 Declaration under 37 CPR 1.132 by Reinhold B. Pollner, Ph.D, signed Dec. 19, 2008 ("Declaration-2"). 8 Declaration under 37 CPR 1.132 by Reinhold B. Pollner, Ph.D, signed April 1, 2010 ("Declaration-3"). 15 Appeal2017-005716 Application 13/164,605 claim." Id. We agree with Examiner that the data presented in these declarations is not commensurate with the scope of the claims because the claims do not require any particular level of hybridization. Indeed, the claims can contain components that are all completely denatured at the recited temperature and still fall within the scope of the claims. Accordingly, we agree with Examiner that the evidence presented in the declarations is not commensurate in scope with the present claims and therefore not sufficient of overcome the prima facie case of obviousness presented. We conclude that the evidence cited by Examiner sufficiently supports a prima facie case of obviousness with respect to claim 16. Appellants have not provided sufficient rebuttal evidence that on balance outweighs the evidence supporting Examiner's conclusion of obviousness based on the claims as currently presented. Claims 18, 19, 21-26, 28, 29, 31-34, 37, and 38 were not separately argue and fall with claim 16. See 37 C.F.R. § 4I.37(c)(l)(iv). SUMMARY We affirm the rejection of claim 16 as being indefinite under 35 U.S.C. § 112, second paragraph. Claims 18, 19, 21-26, 28, 29, 31-34, 37, and 38 were not separately argued and fall with claim 16. We affirm the rejection of claim 16 under 35 U.S.C. § 103(a) over Weisburg and Eli. Claims 18, 19, 21-26, 28, 29, 31-34, 37, and 38 were not separately argued and fall with claim 16. 16 Appeal2017-005716 Application 13/164,605 TIME PERIOD FOR RESPONSE No time period for taking any subsequent action in connection with this appeal may be extended under 37 C.F.R. § 1.136(a). AFFIRMED 17 Copy with citationCopy as parenthetical citation