Short Summary
ProAmpac has filed an IPR petition seeking cancellation of all 15 claims of U.S. Patent 11,072,148, asserting anticipation and obviousness over four prior‑art references.
Detailed Summary
In a petition for Inter Partes Review (IPR2025‑01143), ProAmpac Holdings Inc. challenges the validity of every claim in U.S. Patent No. 11,072,148, which covers a recyclable packaging stack with a thin aluminum layer and protective coating. The petitioner contends that the invention is fully anticipated by the 2014 Gundlach publication and that the remaining claim scope is obvious when combining Gundlach with Yializis (2009), Rebouillat (2015), and the industry‑standard Voluntary Standard Reference (2013). Six distinct statutory grounds—anticipation under 35 U.S.C. § 102 and obviousness under § 103—are asserted, each mapping specific claim limitations to the cited references. No secondary considerations are presented, and the petition requests that the PTAB institute the IPR and cancel all claims.
Practitioner Note
This case demonstrates the evidentiary and procedural standards applied in patent matters before local courts. Understanding the court's reasoning in ProAmpac Holdings Inc. vs Sigma Technologies Int'l, LLC et al. is valuable context for structuring arguments or assessing risk in similar proceedings.
Related Cases
PacifiCorp et al.vsMES, Inc.
PacifiCorp successfully challenged 26 claims of Birchtech Corp.'s patent (10926218) related to flue gas desulfurization, leading the PTAB to find a reasonable likelihood of prevailing on at least one claim. The Board concluded that combining prior art references was an obvious application of known techniques in mercury removal technology.
Olympus Corporation et al.vsOptimum Imaging Technologies LLC
Olympus and other camera makers settled with Optimum Imaging Technologies, leading to the termination of four inter partes review proceedings covering patent 10,873,685. The Board granted the joint motion to terminate and ordered the settlement agreement to be kept confidential.
Taiwan Semiconductor Manufacturing Company Limited et al.vsMarlin Semiconductor Ltd. et al.
The PTAB upheld the Director’s discretionary denial of an IPR challenging Marlin Semiconductor’s 2015 metal‑oxide semiconductor transistor patent, citing settled expectations and a parallel ITC investigation. TSMC and Apple’s arguments about size and investment were deemed immaterial.
Apple Inc.vsHBCU Messaging US LP
Apple’s petition to invalidate a patent was denied by the PTAB because it failed to show a reasonable likelihood of success on any of the 14 challenged claims. The Board found the obviousness arguments lacked the required particularity and rationale.
Zhuhai CosMX Battery Co., Ltd.vsNingde Amperex Technology Ltd.
Zhuhai CosMX Battery Co., Ltd. successfully demonstrated a reasonable likelihood of success in its IPR against Ningde Amperex Technology Ltd.'s patent, focusing on obviousness under 35 U.S.C. § 103. The Board found that the petitioner adequately showed Murakami discloses key features and that combinations with Beard and Akiike were motivated and predictable.
Dealing with a patent challenge?
Whether it's a Section 3(d) rejection, a post-grant opposition, or a FRAND dispute, Arctic's patent litigation team has handled it. Get a strategy call.
Disclaimer: This page contains an automated summary based on publicly available judicial records. The content is generated for informational purposes only and does not constitute legal advice. Always verify details against the original source judgment before relying on this information for any legal purpose. If you believe any information is inaccurate, please contact us.