Buprenorphine Depot Formulation Controlled-Release Matrix
Summary
USPTO published patent application US20260097031A1 for a depot precursor formulation comprising a controlled-release matrix with an oxygen-containing organic solvent and at least 12% by weight buprenorphine or salts thereof. Inventors include Fredrik Tiberg, Ian Harwigsson, and Markus Johnsson. The application covers methods for pain management and opioid maintenance treatment.
What changed
USPTO published patent application US20260097031A1 for a depot precursor formulation comprising a controlled-release matrix, an oxygen-containing organic solvent, and at least 12% by weight buprenorphine or salts thereof. The formulation is designed for pain management and opioid maintenance treatment. Filing date was May 20, 2025, with application number 19213277.
For pharmaceutical manufacturers developing controlled-release opioid formulations, this patent application represents potential intellectual property that may affect freedom-to-operate considerations for similar depot formulations. Parties should monitor the prosecution history for claim scope and any issued claims that may create licensing obligations or design-around requirements.
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- Monitor for patent grant or office action
Archived snapshot
Apr 12, 2026GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.
OPIOID FORMULATIONS
Application US20260097031A1 Kind: A1 Apr 09, 2026
Inventors
Fredrik Tiberg, Ian Harwigsson, Markus Johnsson
Abstract
A depot precursor formulation comprising: a) a controlled-release matrix; b) at least oxygen containing organic solvent; c) at least 1 2% by weigh of at least one active agent selected from buprenorphine and salts thereof, calculated as buprenorphine free base. Corresponding depot compositions and methods of treatment in pain management, by opioid maintenance and related methods are provided.
CPC Classifications
A61K 31/4748 A61K 9/0024 A61K 31/485 A61K 47/10 A61K 47/14 A61K 47/24 A61K 47/34
Filing Date
2025-05-20
Application No.
19213277
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