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Patent
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Petitioner / Claimant (Plaintiff)
Simpson Strong-Tie Company Inc. et al.
Respondent / Defendant
Columbia Insurance Company et al.
Dispute Summary
Simpson Strong‑Tie has filed a petition to have the PTAB institute review of U.S. Patent 11,920,339, asserting lack of written description, indefiniteness, and obviousness over a suite of prior‑art hangers. The petition seeks institution of post‑grant review for all 31 claims.
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