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Patent
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Petitioner / Claimant (Plaintiff)
Sun Pharmaceutical Industries, Inc.
Respondent / Defendant
Nivagen Pharmaceuticals, Inc.
Dispute Summary
Sun Pharmaceutical Industries petitions the PTAB to invalidate claims 1‑20 of Nivagen’s ’076 patent covering lyophilized phenobarbital sodium formulations. The petition alleges obviousness over PIF, Parker, and West‑Ward references and anticipation/obviousness by the ’608 Publication, and challenges the patent’s priority date and written description support.
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