Background
Cuozzo Speed Technologies held U.S. Patent No. 6,778,074, which claimed a speed limit indicator that displayed a colored warning when a vehicle’s speed exceeded the speed limit for its current GPS location. Garmin International petitioned the Patent Trial and Appeal Board (PTAB) for inter partes review (IPR) of the patent under the America Invents Act (AIA), which created the IPR process as a faster, cheaper alternative to district court litigation for challenging patent validity. The PTAB instituted the IPR and ultimately found claims 10, 14, and 17 invalid as obvious over the prior art.
Cuozzo appealed to the Federal Circuit, raising two significant issues: (1) whether the PTAB’s decision to institute IPR was judicially reviewable on appeal, and (2) whether the PTAB erred in using the “broadest reasonable interpretation” (BRI) standard for construing the challenged claims — a broader standard than the “ordinary and customary meaning” standard used in district court litigation. This was the first Federal Circuit appeal of an IPR final written decision, making the decision foundational for the new post-grant review system.
The Court’s Holding
On the reviewability question, the Federal Circuit held that the PTAB’s decision to institute IPR is not subject to appellate review. The AIA expressly provides that the USPTO Director’s decision whether to institute IPR is “final and nonappealable.” Although Cuozzo argued this nonappealability provision applied only to pre-institution decisions and not to legal errors in the institution decision itself, the court rejected that argument, drawing a firm line: institution decisions are off-limits to appellate review.
On the claim construction standard, the court upheld the PTAB’s use of broadest reasonable interpretation. The USPTO has long applied BRI in examination proceedings because it gives patent applicants the opportunity to narrow claims during prosecution in response to prior art rejections. The court found the USPTO had reasonably extended BRI to IPR proceedings, where patent owners can similarly propose claim amendments to avoid prior art. Judge Newman dissented vigorously, arguing that BRI in IPR proceedings — which are adversarial and final — was inappropriate and inconsistent with the IPR system’s design as a surrogate for district court litigation, where the narrower claim construction standard applies.
Key Takeaways
- PTAB decisions to institute IPR are final and non-appealable — parties cannot appeal the decision to grant or deny IPR review even if the institution decision was legally erroneous.
- The PTAB applies the “broadest reasonable interpretation” standard in IPR proceedings, which means claims are read more broadly than in district court — creating a strategic gap where the same claim may survive district court litigation but be found invalid in IPR.
- The broadest reasonable interpretation standard was later eliminated: the USPTO changed to the Phillips standard (ordinary and customary meaning) for IPR proceedings effective November 2018, partially vindicating Judge Newman’s concern.
- The case was affirmed by the Supreme Court in Cuozzo Speed Technologies v. Lee (2016), which upheld both the non-reviewability of institution decisions and the USPTO’s authority to use BRI in IPR proceedings.
Why It Matters
In re Cuozzo established the basic procedural rules for what quickly became one of the most important forums in patent law. IPR proceedings at the PTAB became a primary tool for technology companies accused of patent infringement — particularly those facing suits from non-practicing entities (NPEs) — and for competitors seeking to clear patent thickets. The BRI standard adopted in Cuozzo made IPR a particularly effective invalidity tool, since broader claim interpretations often map better onto prior art.
The case also revealed a systemic tension in the AIA’s IPR design: the same patent claim could be valid in district court (under Phillips) while being invalid at the PTAB (under BRI) — an inconsistency that frustrated many practitioners and ultimately led to the USPTO’s 2018 rule change. Understanding Cuozzo is essential for anyone navigating the intersection of district court patent litigation and parallel PTAB proceedings.