{"schema_version":"secwatch.filing_event.v1","accession":"0001171843-26-000676","form_type":"8-K","ticker":"ABUS","cik":"0001447028","company_name":"Arbutus Biopharma Corp","filed_at":"2026-02-06T23:59:59+00:00","discovered_at":"2026-05-14T18:02:35.103691+00:00","generated_at":"2026-05-16T04:04:19.171467+00:00","sec_items":["8.01","9.01"],"event_type":"litigation","sentiment":"neutral","materiality_score":0.85,"calibrated_materiality_score":0.85,"confidence":"high","headline":"Arbutus patent case vs Moderna to proceed in Delaware; Section 1498 defense limited","bullets":["Court denies Moderna's summary judgment on Section 1498 for most vaccine doses; only government employee doses go to Court of Federal Claims.","Prosecution history estoppel bars Arbutus from asserting doctrine of equivalents on molar ratio claims; literal infringement required.","Indefiniteness challenges dismissed; factual disputes on patent validity reserved for jury.","Case covers 500M+ doses of Moderna's COVID-19 vaccine; $8.2B in government spending referenced."],"urls":{"canonical":"https://secwatch.observer/filing/0001171843-26-000676","json":"https://secwatch.observer/filing/0001171843-26-000676.json","markdown":"https://secwatch.observer/filing/0001171843-26-000676.md","text":"https://secwatch.observer/filing/0001171843-26-000676.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1447028/000117184326000676/0001171843-26-000676-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1447028/000117184326000676/f8k_020626.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-16T04:04:19.171467+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"}