Veritas Bio, a biotechnology holding company established by two co-founders of expressed RNAi firm Nucleonics, said this week that the US Patent and Trademark Office has issued a notice of allowance on a patent application covering a novel liver-directed RNAi delivery technology.
With Marina Biotech's back against the wall, the RNAi drugs field may soon see the departure of its third player this year, following the bankruptcy of Traversa Therapeutics and the acquisition of Tacere Therapeutics by Benitec Biopharma.
Although it was one of the earliest patents in the RNAi field, the IP had earlier been deemed invalid by the USPTO after re-examination proceedings were initiated by now-defunct expressed RNAi firm Nucleonics.
The allowed patent covers the use of multiple-promoter expression cassettes for simultaneous delivery of RNAi. Separately, the Aussie shop said the USPTO won’t likely decide a company appeal until the third quarter of next year.