Arbutus initiates patent infringement actions against Pfizer and BioNTech

16 July 2026

US clinical-stage biopharma Arbutus Biopharma (Nasdaq: ABUS) saw its shares rise 4% to $4.70 in premarket activity today, as it announced initiation of patent infringement action.

Along with Genevant Sciences, a subsidiary of Roivant Sciences (Nasdaq: ROIV)), Arbutus filed three international lawsuits seeking to enforce patents protecting their innovative LNP technology against US pharma giant Pfizer (NYSE: PFE) and Germany’s BioNTech (Nasdaq: BNTX) and certain of their affiliates. Arbutus and Genevant are seeking monetary relief, as well as injunctions against Pfizer/BioNTech’s mRNA-LNP COVID-19 vaccines and any other products that would infringe the asserted patents.

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