Short Summary
Samsung has filed a petition for inter partes review of U.S. Patent 11,621,360, asserting that the claims covering microstructured photodetectors are obvious over prior art such as Kuboi, Shinohara, and Yu. The petitioner seeks institution of the IPR and cancellation of claims 1,3,5‑6,8‑9.
Detailed Summary
In Petition IPR2025‑00994, Samsung Electronics and its affiliates request that the PTAB institute an inter partes review of U.S. Patent No. 11,621,360, which claims a photodetector device with micro‑structured pillars, solid‑dielectric sidewalls, and monolithic integration of the image sensor with circuitry. Samsung contends that the asserted claims are unpatentable under 35 U.S.C. §103 because the same structural features and dimensional ranges were disclosed in the prior‑art references Kuboi (U.S. Patent Application 2012/0049044), Shinohara (U.S. Patent Application 2012/0033119), and Yu (U.S. Patent Application 2012/0153124). The petition details how a person of ordinary skill would have been motivated to combine these teachings, resulting in obviousness for claims 1,3,5‑6,8‑9. The filing includes a declaration from Dr. Michael Lebby and a comprehensive list of exhibits supporting the obviousness argument. Samsung asks the Board to institute the proceeding and cancel the challenged claims.
Practitioner Note
This case demonstrates the evidentiary and procedural standards applied in patent matters before local courts. Understanding the court's reasoning in Samsung Electronics Co., Ltd. et al. vs W&Wsens Devices Inc. is valuable context for structuring arguments or assessing risk in similar proceedings.
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