Xtampza Not Infringing 2 OxyContin Patents, Judge Says

By Alison Noon (October 1, 2018, 9:17 PM EDT) -- An opioid painkiller designed to deter sniffing and injection does not infringe two of Purdue Pharma LP's OxyContin-related patents, a Massachusetts federal judge has ruled in a victory for Collegium Pharmaceutical Inc. and its two-year-old Xtampza XR....

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