Adrian Speck QC, Mark Chacksfield QC and Thomas Jones appeared for the claimants in this High Court patent action, the first in a series of trials between these parties. This trial concerned a patent for a method for improving handovers between mobile communication systems, which is part of a portfolio of standards essential patents held by the Optis Group. Apple denied that the patent is essential and contended that it was invalid.
Mr Justice Birss found the patent valid and essential to the relevant standards. The claim for infringement succeeded and Apple’s counterclaim for revocation failed.