Executive Summary
TSMC and Apple have filed a petition to invalidate Marlin Semiconductor’s ’473 MOS transistor patent, asserting that all ten claims are obvious over prior‑art references. The petition seeks institution of an IPR and argues against discretionary denial.
Related Cases
TESLA, INC.vsiQar Inc.
The PTAB found all 16 challenged claims unpatentable based on anticipation and obviousness. The decision hinged on the Petitioner successfully demonstrating that prior art (Koebler) disclosed all elements of the claimed invention, while also clarifying claim terms regarding sensor data analysis.
Intelligent Wellhead Systems, Inc. et al.vsDowning Wellhead Equipment, LLC et al.
Intelligent Wellhead Systems has filed a PGR petition seeking cancellation of all 78 claims of Downing's hydraulic fracturing patent, arguing the claims are abstract, lack written description, contain new matter, and are obvious over multiple prior‑art references.
Cisco Systems, Inc.vsLionra Technologies Limited
The PTAB found claims unpatentable under 35 U.S.C. § 103(a) based on a combination of prior art references (Gai, Yip, Kwan, and Georgiou). The Board determined that an ordinary skilled artisan would have been motivated to combine these teachings to enhance network security and implement advanced ACL functions.
Sandisk Technologies, Inc. et al.vsLongitude Flash Memory Solutions Ltd. et al.
Sandisk and Longitude Flash Memory Solutions settled their IPRs (IPR2025-01281 and IPR2025-01283) before institution. The Board granted the joint motion to terminate, dismissing the petitions and keeping the settlement agreement confidential.
Samsung Electronics Co., Ltd. et al.vsEmpire Technology Development LLC
Empire Technology has filed a Director Review request in IPR2024‑00896. Samsung has five business days to submit a limited response, with no new evidence allowed.
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