IP High Court, Reiwa 5 (Gyo-Ke) 10061 [Combustor and boiler] <Presiding Judge Miyasaka>
日本語版を読む / Japanese version Article information Article type: Case note Category: Patents Topics: Inventive step, Motivation and teaching away, Patent corrections First published on this website: October 2, 2026 Case number (as stated in the source): Reiwa 5 (Gyo-Ke) 10061 Display and classification checked: October 2, 2026 (not a re-review of the legal analysis) IP High Court, Reiwa 5 (Gyo-Ke) 10061 [Combustor and boiler] <Presiding Judge Miyasaka> * Inventive step denied (so
IP High Court, Reiwa 5 (Gyo-Ke) 10084 [Electric impact fastening tool] <Judge Hibiki Shimizu>
日本語版を読む / Japanese version Article information Article type: Case note Category: Patents Topics: Inventive step, Motivation and teaching away, Patent corrections First published on this website: October 2, 2026 Case number (as stated in the source): Reiwa 5 (Gyo-Ke) 10084 Display and classification checked: October 2, 2026 (not a re-review of the legal analysis) IP High Court, Reiwa 5 (Gyo-Ke) 10084 [Electric impact fastening tool] <Judge Hibiki Shimizu> * No inventive step.
IP High Court, Reiwa 5 (Gyo-Ke) 10062 [Bone anchor with improved fixation strength] <Presiding Judge Shoji>
日本語版を読む / Japanese version Article information Article type: Case note Category: Patents Topics: Inventive step, Design choices, Patent corrections First published on this website: October 2, 2026 Case number (as stated in the source): Reiwa 5 (Gyo-Ke) 10062 Display and classification checked: October 2, 2026 (not a re-review of the legal analysis) IP High Court, Reiwa 5 (Gyo-Ke) 10062 [Bone anchor with improved fixation strength] <Presiding Judge Shoji> The claimed “outer su
Tokyo District Court, Reiwa 1 (Wa) 32779 [Clothing] <Presiding Judge Kokubu>
日本語版を読む / Japanese version Article information Article type: Case note Category: Patents Topics: Inventive step, Motivation and teaching away, Claim interpretation, Patent corrections First published on this website: October 2, 2026 Case number (as stated in the source): Tokyo District Court, Reiwa 1 (Wa) 32779 Display and classification checked: October 2, 2026 (not a re-review of the legal analysis) Tokyo District Court, Reiwa 1 (Wa) 32779 [Clothing] <Presiding Judge Kokubu
IP High Court, Reiwa 5 (Ne) 10063 [Electric impact fastening tool] <Presiding Judge Hibiki Shimizu>
日本語版を読む / Japanese version Article information Article type: Case note Category: Patents Topics: Inventive step, Patent corrections First published on this website: October 2, 2026 Case number (as stated in the source): Reiwa 5 (Ne) 10063 Display and classification checked: October 2, 2026 (not a re-review of the legal analysis) IP High Court, Reiwa 5 (Ne) 10063 [Electric impact fastening tool] <Presiding Judge Hibiki Shimizu> Inventive step denied. <Difference A> The inventi
IP High Court, Reiwa 6 (Gyo-Ke) 10017 [Optimized nutritional formulations] <Presiding Judge Miyasaka>
* Inventive step denied for a numerically limited invention. (The numerical range in the primary reference was encompassed by the claimed numerical range.)
![[Article / US Designs] New obviousness standards for US design patents (Masato Sasaki, Patent, June 2025)](https://static.wixstatic.com/media/324a18_d8ed339239ae429490c8a9626522addc~mv2.png/v1/fill/w_962,h_724,fp_0.50_0.50,q_35,blur_30,enc_avif,quality_auto/324a18_d8ed339239ae429490c8a9626522addc~mv2.png)
![[Article / US Designs] New obviousness standards for US design patents (Masato Sasaki, Patent, June 2025)](https://static.wixstatic.com/media/324a18_d8ed339239ae429490c8a9626522addc~mv2.png/v1/fill/w_962,h_724,fp_0.50_0.50,q_95,enc_avif,quality_auto/324a18_d8ed339239ae429490c8a9626522addc~mv2.png)
[Article / US Designs] New obviousness standards for US design patents (Masato Sasaki, Patent, June 2025)
The CAFC en banc judgment of May 21, 2024 (LKQ) abolished the Rosen–Durling test, used to assess US design-patent obviousness for over 40 years. ⇒ Design patents will now be subject to the four factual inquiries (Graham factors), as utility patents are. 1. Previous standards: The end of the Rosen–Durling test
IP High Court, Reiwa 5 (Gyo-Ke) 10149 [Multi-branched heat exchanger with independent baffles] <Presiding Judge Miyasaka>
From the description in Reference 2, the baffle cell itself obstructs and redirects fluid flow, corresponding to the baffle of the amended invention at issue. The baffle cell also includes a solid portion (solid domain) and blocks the flow path, so it can be called a solid wall.
Topic guide: Inventive step
Explore existing articles on inventive step, design choices, motivation and teaching away. The collection includes case notes, reviews of publications and lecture materials. See each article for its discussion and sources.
[IP Practice Online] “20 inventive-step issues, 3 min each” (Authors; supervisor: Hideki Takaishi)
[Summary; case discussions omitted] 1. Motivation to combine and design choice are independent. Weak correlation with problem-solving favors design choice. 2. Cited-invention eligibility: No comment.
![Tokyo District Court, 2012 (Wa) 12351 [Rice Cake]](https://static.wixstatic.com/media/324a18_1e68d290faf1421383ef0182da9fd77b~mv2.png/v1/fill/w_225,h_125,fp_0.50_0.50,lg_1,q_35,blur_30,enc_avif,quality_auto/324a18_1e68d290faf1421383ef0182da9fd77b~mv2.png)
![Tokyo District Court, 2012 (Wa) 12351 [Rice Cake]](https://static.wixstatic.com/media/324a18_1e68d290faf1421383ef0182da9fd77b~mv2.png/v1/fill/w_152,h_84,fp_0.50_0.50,q_95,enc_avif,quality_auto/324a18_1e68d290faf1421383ef0182da9fd77b~mv2.png)
