IP High Court, Case No. 2025 (Ne) 10049
更新日：10月28日
Article information
Article type: Case note
Display and classification checked: 2026-09-30
Categories: Patents
Topics: Inventive step / Patent corrections
Published on this website: 2026-09-29
IP High Court, Case No. 2025 (Ne) 10049
[Portable information communication device]
(Presiding Judge Hasegawa)
= Cases No. 2025 (Ne) 10051, 2025 (Ne) 10047, 2025 (Ne) 10040, Tokyo District Court No. 2022 (Wa) 70131, etc.
A patent that had previously prevailed in patent infringement litigation against Sharp and SoftBank was held invalid on the basis of a different primary reference.
The primary reference was found to be the same as the patent at issue in a particular use situation.
⇒ If this is the logic, would not the same have been true of the primary reference in the Sharp and SoftBank cases?
(*A new rebuttal to the invalidity defense based on correction was raised on appeal, but the corrected invention was held readily conceivable.)
(Excerpts from the judgment — translated)
A mobile phone is normally premised on use while carried by a user, and it goes without saying that, in that situation, even if the resolution of the image data to be displayed is greater than the screen resolution of the built-in display panel, the image data is transmitted to and displayed on the built-in display panel.
Thus, when implementing the function of displaying image information that cannot be clearly displayed on the simplified liquid crystal display panel 23, the mobile phone of the invention in Exhibit Otsu 6 is found to transmit that image information to the simplified liquid crystal display panel 23 and display it.
Originally posted on LinkedIn: https://www.linkedin.com/feed/update/urn:li:activity:7509879084378767360/
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Updates and corrections
This log starts on 30 September 2026. Display and classification checks are distinct from a review of the legal analysis.
2026-09-30 — Presentation update: added the article type, this change log and a link to consultation options. The existing article text was preserved.
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