Indivior PLC said a U.S. court found that privately held Alvogen, Inc. did not violate three of the patents related to its opioid addiction therapy, Suboxone Film.
The Richmond, Va.-based pharmaceutical company "believes that it has grounds to appeal" the U.S. District Court for the District of Delaware's ruling on the patents.
According to the company's 2017 annual report, Suboxone Film had an average market share of 57% in 2017, down from 61% in 2016.
Indivior added that if a generic version of Suboxone Film should be released in the U.S., "it could potentially result in a rapid and material loss of market share" for the medicine.
In February, Indivior filed lawsuits in the U.S. against generic-drug makers Dr. Reddy's Laboratories Ltd., Alvogen and Teva Pharmaceutical Industries Ltd. over a patent covering the opioid addiction treatment.