By Alex Li and Matt Johnson

If you don’t have new grounds to add, you may as well copycat. On September 4, 2019, the PTAB denied Microsoft’s petition requesting inter partes review (“IPR”) of U.S. Patent No. 7,167,487 (“the ’487 patent”); furthermore, the panel also denied Microsoft’s motion to join its IPR to another IPR over the same patent filed by Apple. See Microsoft Corp. v. UNILOC2017LLC, Case IPR2019-00744, (PTAB, Sept. 4 2019) (Paper 11).

The ’487 patent, which claims certain wireless network technologies, is owned by Uniloc 2017 LLC, who has filed infringement actions against many well-known cellphone manufacturers. In late 2018, a group led by Apple, including LG and Samsung, filed an IPR petition to review the patent. The PTAB instituted the IPR in June 2019. In March 2019, Microsoft filed its own IPR petition to review the ’487 patent with essentially the same arguments.

In the first part of the written opinion, the PTAB denied Microsoft’s petition requesting IPR, because it “relies on substantially the same prior art and raises substantially the same arguments raised in the Apple IPR.” Although Microsoft’s petition contains an additional reference “TS 23.107,” the PTAB found that it “adds little, substantively, to the grounds raised in the Apple IPR.”

In the second part of the same opinion, the PTAB also denied Microsoft’s motion to join its IPR with the Apple IPR. The PTAB reasoned that Microsoft’s proposed joinder would affect the cost, procedural complexity, and scheduling of the Apple IPR because all deadlines would have to be extended to give Uniloc sufficient time and opportunity to respond to any differences between Microsoft’s and Apple’s positions and between their respective declarants. The PTAB emphasized that the Board’s post-grant proceedings were meant to be “quick and cost effective alternatives to litigation;” they were a part of the America Invents Act to “establish a more efficient and streamlined patent system and limit unnecessary and counterproductive litigation costs.”

Microsoft felt it was inconsistent for the PTAB to refuse to institute review because the IPRs were “too similar,” while at the same time refuse joinder because the IPRs were “too different.”

But the PTAB sees this “as a consequence of [Microsoft’s] own strategy” because “Microsoft chose not only to file a petition that raises new grounds that do not substantively add to the grounds raised in the Apple IPR, but to request joinder of the Microsoft and Apple IPRs, rather than simply requesting joinder as a party to the Apple IPR.” The opinion suggests that the PTAB would rather receive a “me too” or “copycat” petition, “where joinder would not affect the cost, procedural complexity, or scheduling.”


It is worth noting that the PTAB is very conscious of judicial economy and efficiency. Litigants at this forum need to keep this in mind when planning their litigation strategy.

The following two tabs change content below.
Matt Johnson is one of the Firm's primary contacts on practice before the PTAB. Currently co-chairing the Firm's PTAB subpractice and involved in proceedings at the Board since the first day of their availability in September 2012, Matt regularly represents clients as both petitioners and patent owners at the Board. He further works as an advocate for clients in appeals from Board proceedings at the Federal Circuit.