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IPR Estoppel in Action

IPR Estoppel in Action

By Sabrina Bellantoni and Matt Johnson - Recently, District Court Judge Thomas S. Zilly in the Western District of Washington granted Ironburg Inventions Ltd.’s (“Ironburg”) motion for inter partes review (“IPR”) estoppelpursuant to 35 U.S.C. § 315(e)(2), which...

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Road Mapping Leads to Dead End

Road Mapping Leads to Dead End

By Dave Cochran and Daniel Sloan - On April 25, 2024, the PTAB denied Masimo Corporation’s (“Petitioner’s”) second petition for inter partes review (“IPR”) against U.S. Patent No. 10,076,257 (the “’257 patent”).  Masimo Corp. v. Apple Inc., IPR2024-00071, Paper 7...

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Shifting Burden Dooms Patent Owner

Shifting Burden Dooms Patent Owner

By Hailey Stewart,* Evan Tassis and Matt Johnson - In a Final Written Decision, the PTAB declared claims of a patent unpatentable after finding the patent was not entitled to the earlier priority date of the anticipatory reference in Platinum Optics Technology, Inc....

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