L&P Secures Positive Reexamination Outcome for Valuable “WiFi Calling” Patent

The United States Patent and Trademark Office (PTO) has concluded two reexaminations of U.S. Patent No. 6,922,728 owned by KAIFI, LLC.  The reexaminations were requested by T-Mobile and Verizon and then merged by the PTO’s Central Reexamination Unit (CRU).  The reexamination certificates, issued today, confirmed the patentability of all claims.  One dependent claim was amended, and all other claims were confirmed in their original form.  T-Mobile and Verizon filed the reexamination requests after KAIFI had sued each company alleging that their WiFi calling feature infringed the ’728 Patent.  Both parties have since settled with KAIFI, as did AT&T following an earlier lawsuit.  The ’728 Patent was invented by Dr.  Dong-Ho Cho when he was a professor at the Korea Advanced Institute for Science and Technology (KAIST).  L&P founding partner Matt Phillips represented KAIFI in the reexaminations.  According to Phillips, “We are pleased with this positive outcome for KAIFI.”  He added, “Working on a reexamination is a nice break from AIA trials.  Before the AIA, I would regularly work on reexams.  For a while it seemed that the AIA had made reexams obsolete, but they are making a bit of resurgence in some circumstances, as these cases demonstrate, and it’s nice to have them back.”