{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-22-178106","form_type":"8-K","ticker":"ENTA","cik":"0001177648","company_name":"ENANTA PHARMACEUTICALS INC","filed_at":"2022-06-22T23:59:59+00:00","discovered_at":"2026-05-14T18:03:59.949318+00:00","generated_at":"2026-06-24T23:52:20.365483+00:00","sec_items":["8.01"],"event_type":"litigation","sentiment":"neutral","materiality_score":0.65,"calibrated_materiality_score":0.65,"confidence":"high","headline":"Enanta sues Pfizer for patent infringement over Paxlovid, seeks damages only","bullets":["Filed suit against Pfizer in U.S. District Court for Massachusetts over U.S. Patent No. 11,358,953 covering coronavirus protease inhibitors.","Patent was awarded earlier in June 2022 based on a July 2020 application; Enanta claims Pfizer's Paxlovid infringes.","Enanta states it will not seek an injunction or take action to block production, sale, or distribution of Paxlovid.","Enanta seeks 'fair compensation' for Pfizer's use of the coronavirus protease inhibitor claimed in the '953 patent."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-22-178106","json":"https://secwatch.observer/filing/0001193125-22-178106.json","markdown":"https://secwatch.observer/filing/0001193125-22-178106.md","text":"https://secwatch.observer/filing/0001193125-22-178106.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1177648/000119312522178106/0001193125-22-178106-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1177648/000119312522178106/d356525d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-24T23:52:20.365483+00:00"},"review":{"review_status":"machine_generated","human_reviewed":false,"corrected":false,"correction_note":null,"correction_timestamp":null,"superseded_by":null,"related_filings":[]},"source_grounded_claims":[],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}