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Last Updated: December 12, 2025

Claims for Patent: 9,289,387

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Summary for Patent: 9,289,387

Title:	Method of treating pain by administering sublingual fentanyl spray
Abstract:	The present invention is directed to sublingual formulations containing fentanyl, a pharmaceutically acceptable salt thereof, or derivative thereof, suitable for administration to a patient, and methods for treatment with the formulations.
Inventor(s):	S. George Kottayil, Venkat R. Goskonda, Zhongyuan Zhu, Linet Kattookaran, Neha Parikh
Assignee:	Btcp Pharma LLC
Application Number:	US14/448,720
Patent Litigation and PTAB cases:	See patent lawsuits and PTAB cases for patent 9,289,387
Patent Claims:	1. A method of treating pain comprising sublingually administering a liquid spray formulation in the form of discrete liquid droplets having a mean diameter of at least about 10 microns to a human patient experiencing pain, said liquid spray formulation comprising an effective amount of fentanyl, a free base or a pharmaceutically acceptable salt thereof, or derivative thereof, dispersed in a pharmaceutically acceptable liquid carrier.

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