Patent 8703177 was granted and assigned to Biodelivery Sciences International Inc (Bd5) on April, 2014 by the United States Patent and Trademark Office.
The present invention provides abuse deterrent mucoadhesive devices for delivery of buprenorphine. Each device comprises a mucoadhesive layer and a backing layer, and the pH in each layer is selected, such that absorption of buprenorphine is maximized.