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Divergent Patent Law Blog
Commentary on U.S patent prosecution, PTAB practice, Federal Circuit developments, and cross-border patent strategy.


Written for the Skilled Artisan, Read by Everyone: Drafting Patent Applications for Multiple Audiences
Executive Summary: A patent application is legally evaluated through the lens of a person of ordinary skill in the art, but its practical success depends on a much broader audience: patent examiners, continuation counsel, foreign associates and national-phase examiners, judges, opposing counsel, juries, and licensing and business teams. This article argues that the solution is not to write different versions of the invention for different readers, but to develop one coherent
Brandon Theiss
Jul 2021 min read


Patent Prosecution Appeals in Translation: Comparing USPTO PTAB Appeals and JPO Appeals Against Examiner Refusals
Executive Summary: This article compares the USPTO ex parte appeal process before the PTAB with the JPO appeal against an examiner’s decision of refusal, using each system as a teaching framework for practitioners trained in the other. Its central point is that the two systems are analogous but not interchangeable: a USPTO appeal is triggered by the “twice rejected” rule and proceeds through a record-centered, brief-driven sequence—Notice of Appeal, Appeal Brief, Examiner’s A
Brandon Theiss
Jul 1824 min read


Mis-Mapping, Not Mini-Trial: A Case Study in the USPTO’s New Pre-Order Paper Procedure
Executive Summary: The USPTO’s new pre-order paper procedure gives patent owners a narrow but potentially consequential opportunity to challenge an ex parte reexamination request before the Office orders reexamination, but the article emphasizes that this opportunity must be framed consistently with the low SNQ threshold: the patent owner need not, and should not, try to disprove unpatentability; rather, it should show that the request misidentifies the cited reference’s teac
Brandon Theiss
Jul 1614 min read


The Examiner Is Not Opposing Counsel: Patent Prosecution as Mediative Advocacy
Executive Summary: This article argues that examiner-level patent prosecution is better understood as a form of mediative advocacy than as the adversarial process for which lawyers are traditionally trained. Unlike litigation, prosecution involves no opposing claimant, the asserted legal right remains mutable, and both the examiner and applicant ultimately seek a correct determination of patentability, although they approach that objective from different institutional roles.
Brandon Theiss
Jul 1419 min read


Keeping the Family Open: U.S. Continuation Practice Compared with Europe, China, Korea, and Japan
Executive Summary: U.S. continuation practice is a uniquely powerful portfolio-management tool because it allows applicants to keep a patent family pending and pursue additional same-disclosure claim sets as markets, competitors, prior art, licensing needs, and litigation positions evolve. By contrast, Europe, China, Korea, and Japan offer important but more constrained follow-on mechanisms—principally divisionals, Korea’s narrower split/separate application procedure, and po
Brandon Theiss
Jul 1218 min read
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