Product-by-process claims | 弁護士・高石秀樹の特許チャンネル

[Article / Patents] Examination of clarity assessments in recent court decisions (Kentaro Okada et al., Patent, June 2025)

Clarity assessments cannot be said to have become stricter than before!! 1. Expressions of degree such as “substantially” and “approximately” Example held unclear

Topic guide: Claim interpretation and equivalents

Explore articles on claim interpretation, the doctrine of equivalents and product-by-process claims. Consult the individual articles and their sources for the facts and discussion of each case.

The Supreme Court's Product-by-Process Judgments

An English translation of Hideki Takaishi's 2015 commentary on the Supreme Court's PBP judgments and consistent claim construction.

Tokyo District Court, 2013 (Wa) 33070 [Agricultural-Produce Sorting Apparatus] <Hasegawa>

[Article] Supplementing Unfair-Competition Protection Through Civil Code Tort Law (Patent Supplement, 2023; Professor Tatsuhiro Ueno)

[Unfair Competition Prevention Act / Trade Secrets] Tokyo District Court, 2014 (Wa) 1397, the Shoe Last case

[U.S. Patents] November 6, 2023, CAFC <ACTELION v. MYLAN> — Interpretation of Numerical Limitations and Rounding

[Design / Estoppel] Intellectual Property High Court, 2021 (Gyo-Ke) 10067 <Honda>

[Article] The Relationship Between ‘Confusion’ and ‘Business Interests’ Under Article 2(1)(i) of the Unfair Competition Prevention Act (Professor Hisayoshi Yokoyama)

[Article] Judicial Decisions on Infringement Warnings and Notification of False Facts Under the Unfair Competition Prevention Act (Patent Supplement, 2023; Professor Toshiya Kaneko)

Tokyo District Court, 2012 (Wa) 12351 [Rice Cake]

Intellectual Property High Court, 2021 (Ne) 10088 and 2022 (Ne) 10014 [Information Communication Unit]

[Trademark / Contract] Osaka District Court, 1996 (Wa) 6700 — Abuse of the right to terminate

Patent Case Law and Intellectual Property Practice Blog