The US Patent & Trademark Office (USPTO) Patent Trial and Appeal Board has issued final written decisions on four more inter partes reviews in favour of Veeam Software, concluding that all of the remaining patent claims Symantec asserted against Veeam in its second lawsuit in US District Court of Northern California are invalid.

The final written decisions pertain to Symantec’s US Patent Nos. 7 831 861; 7 024 527; 8 117 168 and 7 480 822.

According to Veeam, the USPTO has invalidated the asserted claims in a total of seven Symantec patents as being obvious or anticipated by prior art; as earlier in July 2014, the USPTO invalidated the asserted claims in three other Symantec patents (7,093,086; 6,931,558; and 7,191,299), part of the first lawsuit against Veeam.

“These final USPTO decisions mean Symantec can never again assert these patents against Veeam’s products,” says Ratmir Timashev, CEO of Veeam. “We are delighted with the USPTO’s decisions, which are a testament that the US patent system does not protect patents that do not represent authentic innovation.”