River Stone Bio has announced the grant of a new patent, Microbial Cell with

Improved in vivo Conversion of Thebaine/Oripavine.

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Dec. 2025 – New US patent further strengthens River Stone IP

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This patent, covering the company’s uptake transporter technology, is the first grant of a new patent family

and gives the company protection on its unique approach to bioconversion across a range of products.

.River RiverStone Biotech – Dec. 2025