The denial removes a near-term patent validity challenge to a core Howmet product. Monitor for any Federal Circuit appeal by the petitioner, but the procedural basis (foreign government RPI) is a strong bar to institution.
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Executive Summary
The USPTO Director denied institution of IPR2026-00268, which challenged Howmet Aerospace's patent 11,885,358 covering a blind fastener and installation method. The denial was based on the Director's finding that petitioner CRRC Meishan Co. Ltd. failed to identify the Chinese government entity SASAC as a real party in interest, making the petitioner ineligible to file an IPR under Return Mail and the precedential Tianma decision. The challenged patent claims remain in full force, a positive outcome for Howmet Aerospace.
PTAB Trial Details
Key Facts
- IPR2026-00268 challenging Howmet Aerospace's U.S. Patent 11,885,358 ('BLIND FASTENER AND METHOD OF INSTALLATION THEREOF') was denied institution.
- The Director found that petitioner CRRC Meishan Co. Ltd. failed to identify SASAC, a division of the Chinese government, as a real party in interest, rendering the petitioner ineligible to file an IPR.
- The decision was a discretionary denial under the precedential Tianma Microelectronics Co. v. LG Display Co. (IPR2025-01579) holding that foreign governments cannot be petitioners or RPIs in IPR proceedings.
- No trial was instituted; all challenged claims of the patent survive and remain enforceable.
Financial Impact
Howmet Aerospace retains full patent protection for its blind fastener technology; the patent covers a core product line. No damages or financial figures were stated in the decision.
Risk Factors
- Petitioner may appeal the Director's decision to the Federal Circuit.
- The patent could still face other validity challenges from different petitioners not subject to the foreign government RPI bar.
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 PTAB decision.
| Document | Accession Number |
|---|---|
| PTAB-TRIAL Data (Synthetic) | ptab-IPR2026-00268-den-HWM |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 23, 2026 3d ago | PTAB Trial | — | awaiting T+5 | — | — |
Oct 16, 2026 9d ago | Institutional Cluster | $220.03 | awaiting T+5 | — | $185.91 (+15.51%) |
Oct 14, 2026 11d ago | Press Release | $217.54 $208.15 | ▼ −4.32% | ▼ −4.77% | $185.91 (−14.54%) |
Aug 6, 2026 11w ago | 8-K | $289.72 $282.82 | ▼ −2.38% | ▼ −3.59% | $185.91 (−35.83%) |
May 28, 2026 21w ago | S-3ASR | $258.23 $250.98 | ▼ −2.81% | ▼ −0.28% | $185.91 (−28.01%) |
Apr 17, 2026 27w ago | Court Ruling | $255.48 $242.26 | ▲ +5.17% | ▲ +5.73% | $185.91 (+27.23%) |
Apr 6, 2026 28w ago | 8-K | $236.46 $255.40 | ▲ +8.01% | ▲ +3.88% | $185.91 (−21.38%) |
US Market Status
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