Short Summary
OnePlus has filed an IPR petition seeking cancellation of eight Pantech LTE‑muting claims, alleging anticipation and obviousness over Chandrasekhar‑I, Chandrasekhar‑II, and TI standards.
Detailed Summary
In IPR2025‑00888, OnePlus Technology (Shenzhen) Co., Ltd. petitions the PTAB to invalidate claims 7, 9‑12, and 14‑16 of U.S. Patent 9,369,251 owned by Pantech Corporation. The petition asserts that the claimed PDSCH muting and CSI‑RS signaling methods are anticipated or rendered obvious by prior‑art references including Chandrasekhar‑I (US 2012/0264441), Chandrasekhar‑II (US 8,514,738), and a Texas Instruments 3GPP proposal. Grounds are based on 35 U.S.C. §§ 102 and 103, and the petitioner requests cancellation of all challenged claims. The filing includes expert declarations and references to related district‑court litigation (EDTX).
Practitioner Note
This case demonstrates the evidentiary and procedural standards applied in patent matters before local courts. Understanding the court's reasoning in OnePlus Technology (Shenzhen) Co., Ltd. et al. vs Pantech Corporation is valuable context for structuring arguments or assessing risk in similar proceedings.
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