https://postgrantproceedings.com/An independent educational guide to U.S. post-grant patent proceedings: inter partes review, post-grant review, ex parte reexamination, supplemental examination, reissue and the Patent Trial and Appeal Board.en-us https://postgrantproceedings.com/a-timely-reminder-the-importance-of-winning-at-the-board/https://postgrantproceedings.com/a-timely-reminder-the-importance-of-winning-at-the-board/Sat, 24 Oct 2026 00:00:00 GMTWhy the PTAB decision is usually decisive: substantial-evidence review, Rule 36 affirmances, forfeiture of new arguments, and standing to appeal. https://postgrantproceedings.com/amending-patent-claims-during-inter-partes-review/https://postgrantproceedings.com/amending-patent-claims-during-inter-partes-review/Sat, 24 Oct 2026 00:00:00 GMTHow IPR motions to amend work: § 316(d), 37 C.F.R. § 42.121, burdens after Aqua Products, preliminary guidance, intervening rights and alternatives. https://postgrantproceedings.com/attacking-a-patent-at-the-pto-beware-the-real-party-in-interest/https://postgrantproceedings.com/attacking-a-patent-at-the-pto-beware-the-real-party-in-interest/Sat, 24 Oct 2026 00:00:00 GMTPractical real party in interest risks for PTAB petitioners: joint defense groups, indemnitors, customers and members, time bar exposure and RPI discovery. https://postgrantproceedings.com/basics-of-an-inter-partes-review-petition/https://postgrantproceedings.com/basics-of-an-inter-partes-review-petition/Sat, 24 Oct 2026 00:00:00 GMTWhat an inter partes review petition must include under 35 U.S.C. § 312(a) and 37 C.F.R. Part 42, the word limit, expert declarations and common failures. https://postgrantproceedings.com/certificate-of-correction-by-a-third-party/https://postgrantproceedings.com/certificate-of-correction-by-a-third-party/Sat, 24 Oct 2026 00:00:00 GMTWhat third parties can and cannot do about certificates of correction under 35 U.S.C. 254 and 255, 37 C.F.R. 1.322, and Superior Fireplace v. Majestic. https://postgrantproceedings.com/cisco-systems-inc-v-c-cation-technologies-llc/https://postgrantproceedings.com/cisco-systems-inc-v-c-cation-technologies-llc/Sat, 24 Oct 2026 00:00:00 GMTCase note on Cisco v. C-Cation, IPR2014-00454: why the PTAB will not consider arguments incorporated into a petition from an expert declaration. https://postgrantproceedings.com/claim-construction-during-inter-partes-review/https://postgrantproceedings.com/claim-construction-during-inter-partes-review/Sat, 24 Oct 2026 00:00:00 GMTHow the PTAB construes claims in inter partes review: the Phillips standard since November 2018, the older BRI standard, and prior court constructions. https://postgrantproceedings.com/comparing-notes-procedures-at-the-uspto-epo-and-jpo/https://postgrantproceedings.com/comparing-notes-procedures-at-the-uspto-epo-and-jpo/Sat, 24 Oct 2026 00:00:00 GMTCompare U.S. PGR, IPR and reexamination with EPO opposition and JPO opposition and invalidation trials: timing, who can file, grounds and effect. https://postgrantproceedings.com/defining-privy/https://postgrantproceedings.com/defining-privy/Sat, 24 Oct 2026 00:00:00 GMTWhat privy means in IPR and PGR: the Taylor v. Sturgell categories, WesternGeco v. ION, and how privity differs from real party in interest. https://postgrantproceedings.com/discovery-and-the-one-year-time-period-in-aia-proceedings/https://postgrantproceedings.com/discovery-and-the-one-year-time-period-in-aia-proceedings/Sat, 24 Oct 2026 00:00:00 GMTHow the one-year deadline for a PTAB final written decision shapes discovery: scheduling orders, due dates, stipulations and practical planning. https://postgrantproceedings.com/discovery-in-post-grant-review-vs-inter-partes-review/https://postgrantproceedings.com/discovery-in-post-grant-review-vs-inter-partes-review/Sat, 24 Oct 2026 00:00:00 GMTHow discovery differs in PGR and IPR: routine discovery, the interests-of-justice and good-cause standards, and the Garmin v. Cuozzo factors. https://postgrantproceedings.com/estoppel-arising-from-ptab-trials/https://postgrantproceedings.com/estoppel-arising-from-ptab-trials/Sat, 24 Oct 2026 00:00:00 GMTHow IPR and PGR estoppel works under 35 U.S.C. 315(e) and 325(e): the trigger, the could-have-raised scope, and product prior art. https://postgrantproceedings.com/evidentiary-considerations-in-ptab-trials/https://postgrantproceedings.com/evidentiary-considerations-in-ptab-trials/Sat, 24 Oct 2026 00:00:00 GMTHow evidence works in PTAB trials: the Federal Rules of Evidence, objections, supplemental evidence, motions to exclude and expert weight. https://postgrantproceedings.com/federal-circuit-decides-en-banc-that-intervening-rights-only-apply-when-text-of-claims-were-amended-during-reissue-and-reexamination/https://postgrantproceedings.com/federal-circuit-decides-en-banc-that-intervening-rights-only-apply-when-text-of-claims-were-amended-during-reissue-and-reexamination/Sat, 24 Oct 2026 00:00:00 GMTAbsolute and equitable intervening rights under 35 U.S.C. 252, 307(b), 318(c) and 328(c), and why Marine Polymer v. HemCon ties them to amended claim text. https://postgrantproceedings.com/first-aia-review-hearing-held-at-uspto/https://postgrantproceedings.com/first-aia-review-hearing-held-at-uspto/Sat, 24 Oct 2026 00:00:00 GMTHow the first AIA trials, Garmin v. Cuozzo (IPR2012-00001) and SAP v. Versata (CBM2012-00001), shaped discovery, claim construction and § 101 practice. https://postgrantproceedings.com/getting-the-last-word-in-ptab-trials/https://postgrantproceedings.com/getting-the-last-word-in-ptab-trials/Sat, 24 Oct 2026 00:00:00 GMTThe PTAB briefing sequence from petition to oral hearing, the limits on replies and sur-replies under 37 C.F.R. 42.23(b), and rules for demonstratives. https://postgrantproceedings.com/in-re-cuozzo-and-the-broadest-reasonable-interpretation-standard-should-the-ability-to-amend-be-relevant-or-is-it-a-convenient-excuse/https://postgrantproceedings.com/in-re-cuozzo-and-the-broadest-reasonable-interpretation-standard-should-the-ability-to-amend-be-relevant-or-is-it-a-convenient-excuse/Sat, 24 Oct 2026 00:00:00 GMTThe history of BRI in IPR: the ability-to-amend debate, In re Cuozzo, the 2016 Supreme Court decision and the 2018 switch to Phillips. https://postgrantproceedings.com/in-re-tanaka/https://postgrantproceedings.com/in-re-tanaka/Sat, 24 Oct 2026 00:00:00 GMTIn re Tanaka (Fed. Cir. 2011) held that adding a narrower dependent claim while keeping all original claims is a correctable error supporting reissue. https://postgrantproceedings.com/in-re-yamazaki-terminal-disclaimers-and-reissue-applications/https://postgrantproceedings.com/in-re-yamazaki-terminal-disclaimers-and-reissue-applications/Sat, 24 Oct 2026 00:00:00 GMTIn re Yamazaki (Fed. Cir. 2012): reissue cannot undo a terminal disclaimer after the disclaimed term expires. How terminal disclaimers work. https://postgrantproceedings.com/in-re-youman-a-second-bite-at-the-apple-or-permissible-recapture-in-a-reissue-patent/https://postgrantproceedings.com/in-re-youman-a-second-bite-at-the-apple-or-permissible-recapture-in-a-reissue-patent/Sat, 24 Oct 2026 00:00:00 GMTThe reissue recapture rule and its three-step test, and how In re Youman (Fed. Cir. 2012) treats a modified narrowing limitation in a reissue claim. https://postgrantproceedings.com/ipr-challenges-to-biopharmaceutical-patents/https://postgrantproceedings.com/ipr-challenges-to-biopharmaceutical-patents/Sat, 24 Oct 2026 00:00:00 GMTHow IPR is used against drug and biologic patents alongside Paragraph IV and BPCIA litigation: grounds, obviousness issues, time bars, estoppel and PGR. https://postgrantproceedings.com/judicial-determination-of-validity-does-not-preclude-subsequent-reexamination-in-uspto/https://postgrantproceedings.com/judicial-determination-of-validity-does-not-preclude-subsequent-reexamination-in-uspto/Sat, 24 Oct 2026 00:00:00 GMTWhy a court ruling that a patent is not invalid does not stop USPTO reexamination: Ethicon v. Quigg, In re Swanson and Fresenius v. Baxter. https://postgrantproceedings.com/latest-edition-of-ptab-trial-practice-guide-july-201/https://postgrantproceedings.com/latest-edition-of-ptab-trial-practice-guide-july-201/Sat, 24 Oct 2026 00:00:00 GMTWhat the PTAB Trial Practice Guide covers, how it evolved into the 2019 consolidated edition, and how it fits with Part 42 and precedential decisions. https://postgrantproceedings.com/links-for-supreme-court-decisions/https://postgrantproceedings.com/links-for-supreme-court-decisions/Sat, 24 Oct 2026 00:00:00 GMTA themed reference list of Supreme Court decisions on AIA trials, patent eligibility and validity, with short summaries and links to each opinion. https://postgrantproceedings.com/patent_modification/certificate-of-correction/https://postgrantproceedings.com/patent_modification/certificate-of-correction/Sat, 24 Oct 2026 00:00:00 GMTWhen and how to use a certificate of correction under 35 U.S.C. 254 and 255, what errors qualify, the new-matter limit, and when reissue is required instead. https://postgrantproceedings.com/patent_modification/disclaimers/https://postgrantproceedings.com/patent_modification/disclaimers/Sat, 24 Oct 2026 00:00:00 GMTLearn how statutory and terminal patent disclaimers work under 35 U.S.C. 253 and 37 CFR 1.321, when owners use them, and what they cost the patent. https://postgrantproceedings.com/patent_modification/ex-parte-reexamination/https://postgrantproceedings.com/patent_modification/ex-parte-reexamination/Sat, 24 Oct 2026 00:00:00 GMTHow ex parte reexamination works: who can request it, the substantial new question standard, the process, amendments, appeals and how it compares with IPR. https://postgrantproceedings.com/patent_modification/inter-partes-reexamination/https://postgrantproceedings.com/patent_modification/inter-partes-reexamination/Sat, 24 Oct 2026 00:00:00 GMTInter partes reexamination was replaced by inter partes review on September 16, 2012. See what it was and what to use now. https://postgrantproceedings.com/patent_modification/inter-partes-review/https://postgrantproceedings.com/patent_modification/inter-partes-review/Sat, 24 Oct 2026 00:00:00 GMTHow inter partes review works: who can file, the one-year time bar, grounds, institution standard, the 12-month timeline, amendments, estoppel and appeal. https://postgrantproceedings.com/patent_modification/post-grant-review/https://postgrantproceedings.com/patent_modification/post-grant-review/Sat, 24 Oct 2026 00:00:00 GMTHow post-grant review works: the nine-month deadline, eligible patents, grounds including sections 101 and 112, the institution standard, timeline and estoppel. https://postgrantproceedings.com/patent_modification/reissue-applications/https://postgrantproceedings.com/patent_modification/reissue-applications/Sat, 24 Oct 2026 00:00:00 GMTPatent reissue under 35 U.S.C. 251: grounds, the two-year broadening deadline, the recapture rule, intervening rights and how it compares with reexamination. https://postgrantproceedings.com/patent_modification/supplemental-examination/https://postgrantproceedings.com/patent_modification/supplemental-examination/Sat, 24 Oct 2026 00:00:00 GMTHow supplemental examination works for patent owners: eligibility, the substantial new question test, effect on inequitable conduct, exceptions and risks. https://postgrantproceedings.com/patent_modification/the-patent-trial-and-appeal-board/https://postgrantproceedings.com/patent_modification/the-patent-trial-and-appeal-board/Sat, 24 Oct 2026 00:00:00 GMTWhat the PTAB does: ex parte appeals, inter partes review, post-grant review, derivation, panel structure, Director review, and where to find decisions. https://postgrantproceedings.com/patent_modification/transitional-program-for-covered-business-method-patents/https://postgrantproceedings.com/patent_modification/transitional-program-for-covered-business-method-patents/Sat, 24 Oct 2026 00:00:00 GMTWhat the CBM review program was, who could use it, why it sunset on September 16, 2020, and which proceedings now serve the same purpose. https://postgrantproceedings.com/post-therasense-why-supplemental-examination-is-less-attractive/https://postgrantproceedings.com/post-therasense-why-supplemental-examination-is-less-attractive/Sat, 24 Oct 2026 00:00:00 GMTHow Therasense v. Becton Dickinson reduced the value of supplemental examination under 35 U.S.C. 257(c), and when patent owners may still find it useful. https://postgrantproceedings.com/prior-user-rights/https://postgrantproceedings.com/prior-user-rights/Sat, 24 Oct 2026 00:00:00 GMTHow the prior commercial use defense of 35 U.S.C. § 273 works: who qualifies, the one-year rule, covered subject matter, limits and proof. https://postgrantproceedings.com/ptab-guidance-after-sas-scotus-decision/https://postgrantproceedings.com/ptab-guidance-after-sas-scotus-decision/Sat, 24 Oct 2026 00:00:00 GMTWhat SAS Institute v. Iancu held, how the PTAB changed institution practice afterward, and what the change means for discretion, efficiency and estoppel. https://postgrantproceedings.com/ptab-rules-quick-fix-1/https://postgrantproceedings.com/ptab-rules-quick-fix-1/Sat, 24 Oct 2026 00:00:00 GMTA history of the PTAB trial rules in 37 C.F.R. Part 42: the 2012 AIA rules, the 2015 quick fix, 2016 word limits, the 2018 Phillips rule and later changes. https://postgrantproceedings.com/reissue-applications-procedure-advantages-pitfalls/https://postgrantproceedings.com/reissue-applications-procedure-advantages-pitfalls/Sat, 24 Oct 2026 00:00:00 GMTHow patent reissue works under 35 U.S.C. 251 and 37 C.F.R. 1.171 to 1.179, what it can fix, and the risks of recapture and intervening rights. https://postgrantproceedings.com/reissue-v-supplemental-examination/https://postgrantproceedings.com/reissue-v-supplemental-examination/Sat, 24 Oct 2026 00:00:00 GMTReissue under 35 U.S.C. 251 vs. supplemental examination under 257: who files, what each fixes, amendments, timing, inequitable conduct and risk. https://postgrantproceedings.com/some-early-statistics-for-supplemental-examination/https://postgrantproceedings.com/some-early-statistics-for-supplemental-examination/Sat, 24 Oct 2026 00:00:00 GMTOutcomes of supplemental examination, where to find current USPTO data on its use, and why request volumes are low compared with inter partes review. https://postgrantproceedings.com/starting-an-aia-post-grant-proceeding-the-different-threshold-standards/https://postgrantproceedings.com/starting-an-aia-post-grant-proceeding-the-different-threshold-standards/Sat, 24 Oct 2026 00:00:00 GMTHow the institution thresholds for IPR, PGR, ex parte reexamination and supplemental examination differ, and why meeting them does not guarantee review. https://postgrantproceedings.com/supplemental-examination-a-more-detailed-review-of-procedure-including-the-uspto-proposed-rules/https://postgrantproceedings.com/supplemental-examination-a-more-detailed-review-of-procedure-including-the-uspto-proposed-rules/Sat, 24 Oct 2026 00:00:00 GMTSupplemental examination procedure under 35 U.S.C. 257 and 37 C.F.R. 1.601 to 1.625: request contents, the twelve-item limit, fees and reexamination. https://postgrantproceedings.com/supplementing-the-record-in-ptab-trials-by-filing-supplemental-information/https://postgrantproceedings.com/supplementing-the-record-in-ptab-trials-by-filing-supplemental-information/Sat, 24 Oct 2026 00:00:00 GMTHow a party adds supplemental information to an IPR or PGR record under 37 C.F.R. 42.123, how it differs from supplemental evidence, and its limits. https://postgrantproceedings.com/taking-a-deposition-in-an-ipr-or-pgr/https://postgrantproceedings.com/taking-a-deposition-in-an-ipr-or-pgr/Sat, 24 Oct 2026 00:00:00 GMTHow depositions work in IPR and PGR: declarations as direct testimony, 42.53 time limits, Testimony Guidelines, foreign witnesses and subpoenas. https://postgrantproceedings.com/the-patent-trial-appeal-board/https://postgrantproceedings.com/the-patent-trial-appeal-board/Sat, 24 Oct 2026 00:00:00 GMTHow the BPAI became the PTAB under the AIA, the new trial proceedings, the end of interferences, and the Oil States and Arthrex decisions. https://postgrantproceedings.com/trial-statistics-from-the-patent-trial-appeal-board/https://postgrantproceedings.com/trial-statistics-from-the-patent-trial-appeal-board/Sat, 24 Oct 2026 00:00:00 GMTHow PTAB trials end and how outcome rates are calculated: denial, settlement under § 317, adverse judgment, final decisions, and why reported rates differ. https://postgrantproceedings.com/understanding-and-prosecution-strategies-for-complying-with-the-uspto-myriad-guidance/https://postgrantproceedings.com/understanding-and-prosecution-strategies-for-complying-with-the-uspto-myriad-guidance/Sat, 24 Oct 2026 00:00:00 GMTPatent eligibility for natural products and diagnostics after Mayo, Myriad and Alice, USPTO guidance in MPEP § 2106, and § 101 in post-grant review. https://postgrantproceedings.com/what-we-know-about-sanctions-at-the-ptab/https://postgrantproceedings.com/what-we-know-about-sanctions-at-the-ptab/Sat, 24 Oct 2026 00:00:00 GMTHow PTAB sanctions work under 37 C.F.R. § 42.12: sanctionable misconduct, the duty of candor, available sanctions and abuse of process. https://postgrantproceedings.com/who-is-the-real-party-in-interest-in-an-ipr-or-pgr/https://postgrantproceedings.com/who-is-the-real-party-in-interest-in-an-ipr-or-pgr/Sat, 24 Oct 2026 00:00:00 GMTThe legal test for a real party in interest in IPR and PGR: the disclosure duty, control and funding, the RPX case, and why the time bar turns on it.