In a precedential decision doubling as a policy blueprint, Director Squires denied institution in Magnolia Medical Technologies v. Kurin, IPR2026-00097 (May 14, 2026).

Background and Key Facts

The facts are instructive. Magnolia litigated validity in district court. On November 3, 2025, the court precluded its invalidity expert on anticipation and obviousness because he had failed to disclose the claim construction those opinions relied on—a lapse within Magnolia's control. Only then did Magnolia file its IPR on substantially the same prior art grounds. A jury later found the patent not invalid.

Magnolia argued that, as no forum had adjudicated those grounds, institution remained appropriate. Squires was unpersuaded: the absence of a merits ruling does not entitle a petitioner to relitigate when the gap stemmed from its own litigation conduct. AIA review is an alternative to litigation, not a second bite after a petitioner loses control of its trial strategy.

The Broader Framework: Systemic Patterns

  • Over 80% of PTAB proceedings involve parallel district court or ITC litigation—often a multiplier, not an alternative.
  • Filing is concentrated: the top 10 petitioners file about as many petitions as the next 70 combined.
  • Foreign-government-affiliated entities rank among the most active filers collectively, while the U.S. government is statutorily barred.
  • Parties take inconsistent positions across forums under a "wait-and-see" approach.

The Discretionary-Denial Doctrine

Squires situates Magnolia within his discretionary-denial line: examiner error (Padagis), inconsistent claim constructions (Revvo), foreign sovereigns (Tianma), and settled expectations (Home Depot, Dabico).

The doctrinal foundation is firm. Under Arthrex and the Federal Circuit's 2026 Apple v. Squires, "no law compels institution"—Director discretion is broad and largely unreviewable.

Practical Implications

  • An IPR filed after a district-court loss or procedural setback on overlapping grounds now faces a steep climb.
  • The "never actually adjudicated" argument carries limited weight when the petitioner controlled why no adjudication occurred.
  • Petitioners should address public-interest and discretionary factors in any filing involving parallel litigation.
  • Patent owners have stronger footing to seek denial when the petitioner had—but did not fully use—a meaningful district-court opportunity.

The institution calculus has shifted. Companies with parallel proceedings should factor these changes into both PTAB and district-court strategy from the start.

Full decision here: USPTO – IPR2026-00097 Director Discretionary Decision.