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Everseal Stationery Products Ltd -and- Document Management Solutions

Case Summary  |  Judgment  |   1 April 2015


His Honour Judge Hacon has handed down judgment in the Intellectual Property Enterprise Court in the patent case Everseal Stationery Products v Document Management Solutions.  The case concerned a patent for self-seal mailers that had previously been considered by His Honour Judge Birss QC in two previous judgments, dealing with ownership of the patent and a declaration of non-infringement.  This time the Court looked at the validity of the patent for the first time, in the context of a claim by Everseal that 3 types of mailer manufactured by DMS infringed the patent.

The Court upheld the contentions put forward by Jonathan Hill, instructed by Mills & Reeve, on behalf of DMS that the patent was invalid because it was lacking in novelty and inventive step.  It also found that Everseal had failed to prove that 2 of the mailers fell within the claims of the patent.