The Patent Trial and Appeal Board’s July 14, 2026 institution decision in IPR2026-00276 is a reminder of the relatively modest—but still meaningful—threshold a petitioner must meet to get an inter partes review off the ground. In granting institution, the Board concluded that the petition established a reasonable likelihood that at least one challenged claim is unpatentable, clearing the statutory bar under 35 U.S.C. § 314(a).

At the institution stage, the PTAB is not issuing a final merits ruling.

The Patent Trial and Appeal Board granted institution in IPR2026-00189, finding that the petitioner made the required threshold showing that at least one challenged claim is reasonably likely to be unpatentable. At the institution stage, that is the key question under 35 U.S.C. § 314(a): not whether the patent is ultimately invalid, but whether the petition presents a sufficiently strong merits case to justify full trial before the Board.

Although an institution decision is preliminary, it is often the first meaningful read on how the PTAB views the parties’ invalidity theories, prior art combinations, and claim construction disputes.

The Patent Trial and Appeal Board granted institution in IPR2026-00146, concluding that the petitioner met the threshold showing required under 35 U.S.C. § 314(a): a reasonable likelihood of prevailing on at least one challenged claim. At the institution stage, that is the key question, and the Board found the petition sufficiently supported to move forward to a full trial on patentability.

Although an institution decision is not a final merits ruling, it is often a significant signal.