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Case Lawsuit Title
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Case / Trial ID Number
Jurisdiction Code
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us
in
upc
eu
Category
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Patent
Trademark
Copyright
Design
Filing Date
Decision Verdict Date
Court / Tribunal
Bench / Panel Judges
Petitioner / Claimant (Plaintiff)
POSCO Co., Ltd. et al.
Respondent / Defendant
ArcelorMittal
Dispute Summary
POSCO has filed an IPR petition seeking cancellation of all 25 claims of ArcelorMittal’s hot‑stamped coated steel patent, alleging obviousness over a suite of prior‑art references. The petition argues that the references were not considered during prosecution and that a skilled artisan would have combined them to achieve the claimed inventions.
Outcome / Ruling
Verdict Document PDF URL
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