{"schema_version":"secwatch.filing_event.v1","accession":"0001171843-26-000979","form_type":"8-K","ticker":"ABUS","cik":"0001447028","company_name":"Arbutus Biopharma Corp","filed_at":"2026-02-20T23:59:59+00:00","discovered_at":"2026-05-14T18:02:35.103902+00:00","generated_at":"2026-05-16T01:26:12.240045+00:00","sec_items":["8.01","9.01"],"event_type":"litigation","sentiment":"positive","materiality_score":0.82,"calibrated_materiality_score":0.82,"confidence":"high","headline":"Arbutus wins partial summary judgment in Moderna patent case; enablement goes to trial","bullets":["Court bars Moderna's obviousness defense: IPR estoppel applies to '435 Patent, issue preclusion bars routine-optimization and phospholipid-range arguments.","Arbutus's motion to exclude Moderna's obviousness expert Dr. Anderson granted.","Moderna's enablement defense survives: Dr. Prud'homme's testimony creates genuine factual dispute; trial needed on whether claims require undue experimentation.","Moderna's derivation defense dismissed for lack of evidence.","Court upholds that prior IPR final written decisions trigger statutory estoppel even without appeal; Moderna cannot relitigate previously rejected arguments."],"urls":{"canonical":"https://secwatch.observer/filing/0001171843-26-000979","json":"https://secwatch.observer/filing/0001171843-26-000979.json","markdown":"https://secwatch.observer/filing/0001171843-26-000979.md","text":"https://secwatch.observer/filing/0001171843-26-000979.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1447028/000117184326000979/0001171843-26-000979-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1447028/000117184326000979/f8k_021926.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-16T01:26:12.240045+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"}