{"schema_version":"secwatch.filing_event.v1","accession":"0000950170-25-051575","form_type":"8-K","ticker":"ATOS","cik":"0001488039","company_name":"ATOSSA THERAPEUTICS, INC.","filed_at":"2025-04-07T23:59:59+00:00","discovered_at":"2026-05-14T18:02:48.430135+00:00","generated_at":"2026-05-23T19:34:34.261258+00:00","sec_items":["8.01"],"event_type":"litigation","sentiment":"negative","materiality_score":0.7,"calibrated_materiality_score":0.7,"confidence":"high","headline":"Intas Pharmaceuticals challenges two Atossa endoxifen patents with PGR and IPR petitions at USPTO","bullets":["Intas filed PGR petition against U.S. Patent No. 12,071,391, titled 'Methods for Making and Using Endoxifen'.","Intas also filed IPR petition against U.S. Patent No. 11,261,151, also titled 'Methods for Making and Using Endoxifen'.","Atossa intends to vigorously contest the petitions and believes the patents are valid and enforceable.","No assurance that Atossa will prevail in the USPTO proceedings."],"urls":{"canonical":"https://secwatch.observer/filing/0000950170-25-051575","json":"https://secwatch.observer/filing/0000950170-25-051575.json","markdown":"https://secwatch.observer/filing/0000950170-25-051575.md","text":"https://secwatch.observer/filing/0000950170-25-051575.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1488039/000095017025051575/0000950170-25-051575-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1488039/000095017025051575/atos-20250407.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-23T19:34:34.261258+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"}