US patent office confirms validity of certain Depomed patents

10 July 2015

USA-based Depomed (Nasdaq: DEPO) says the Patent Trial and Appeal Board (PTAB) of the US Patent and Trademark Office issued its final decision in the inter partes review proceedings (IPRs) initiated by privately-held US drugmaker Purdue Pharma against two Depomed patents (US Patent Nos 6,340,475 and 6,635,280).

The PTAB has confirmed the patentability of each of the 25 claims subject to the IPRs, said Depomed, which is currently the subject of a hostile, $3 billion, acquisition attempt by Ireland-incorporated Horizon Pharma (Nasdaq: HZNP; The Pharma Letter July 7).

Will continue patent infringement case against Purdue

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