Since the passage of the America Invents Act in 2011, a
significant proportion of patent litigation in the United States
has moved to trials held before the Patent Trial and Appeal Board
(PTAB) of the US Patent and Trademark Office (USPTO). These trials
are relatively fast, inexpensive, and narrow in scope compared to
litigation in other forums, such as district courts or the
International Trade Commission. This paper presents a brief summary
of key case milestones and strategic considerations for PTAB
trials.
There are several types of adversarial post-grant proceedings at
the PTAB, including inter partes review (IPR), covered business
method review (CBM), and post-grant review (PGR). To date, IPRs
have been the most popular PTAB trial proceeding, comprising 93% of
petitions filed at the PTAB through August 31, 2019.1
The popularity of IPRs likely hinges, at least in part, on the
proceeding's relatively less restrictive provisions regarding
which patents are