No. 18-916October Term 2019Decided Apr 20, 2020
Thryv, Inc. v. Click-To-Call Technologies, LP
The case answered an important patent-procedure question about whether a PTAB timeliness decision can be challenged in court after review begins.
Case status
- Current stage
- Decided
- Latest event
- Decision released Apr 20, 2020
- What it's about
This case was about whether federal courts can review the Patent Trial and Appeal Board’s decision to start an inter partes review when the Board finds that the patent challenge was not filed too late under the one-year time limit in federal patent law. The dispute arose after the Board instituted review of Click-to-Call’s patent and later canceled claims, and Click-to-Call argued the review should never have been started because the petition was time-barred.
Question presented
1. Whether 35 U.8.C. § 314(d) permits appeal of the PTAB's decision to institute an inter partes review upon finding that§ 315(b)'s time bar did not apply. 2. Whether 35 U.8.C. § 315(b) bars institution of an inter partes review when the previously served patent infringement complaint, filed more than one year before the IPR petition, had been dismissed without prejudice.
- Case path
United States Court of Appeals for the Federal Circuit / Decision released Apr 20, 2020
- Area
Decided Supreme Court case
Briefing
What it's about
The Supreme Court resolved a fight over whether federal courts can review the Patent Trial and Appeal Board's decision to start an inter partes review after finding the patent challenge was not filed too late. The dispute arose after the Board reviewed Click-to-Call's patent and Click-to-Call said Thryv's challenge should have been blocked by the patent law's one-year deadline.
Impact
This matters to patent owners and companies accused of infringement because inter partes review can cancel patent claims. For example, if a petition is filed after the deadline, the ability to challenge the Board's timing call can decide whether the review goes forward at all.
What's next
This docket action is finished. The parties and future patent litigants must now follow the Supreme Court's answer when similar PTAB timing disputes arise.
What was the core dispute in Thryv v. Click-To-Call?
The case asked whether courts may review the PTAB's decision to start an inter partes review after rejecting a one-year time-bar objection. Click-to-Call said the petition came too late.
Why could this case matter in the real world?
It affects patent owners and accused infringers who use PTAB review to challenge patents. A timing decision can determine whether a major patent challenge goes forward.
What happens next after the Supreme Court's decision?
The Supreme Court has finished this case. Lower courts, the PTAB, and future parties will apply the Court's answer in similar timing disputes.
Decision
What the Court decided
The case answered an important patent-procedure question about whether a PTAB timeliness decision can be challenged in court after review begins.
Impact
This matters to patent owners and companies accused of infringement because inter partes review can cancel patent claims. For example, if a petition is filed after the deadline, the ability to challenge the Board's timing call can decide whether the review goes forward at all.
Not official Court text.
Opinion documents
Related cases




Grounding
- Grounding
- Primary materials plus reporting.
- Note
- Best-effort analysis: this explainer relies on a mix of primary materials and trusted secondary sources. Official filings and opinions remain authoritative.
- Checked
- Jul 2, 2026
- Method
- Methodology
Primary materials11
Supreme Court docket 18-916
docket | Jul 3, 2026
Primary case document
Supreme Court document | Jul 3, 2026
CourtListener docket record
docket | Jul 3, 2026
Questions Presented
brief | May 24, 2026
opinion
opinion | Apr 20, 2020
Petition
brief | Jan 11, 2019
Lower Court Orders/Opinions
order | Oct 30, 2018
SupremeCourt.gov
official | Jul 2, 2026
SupremeCourt.gov
official | Jul 2, 2026
SupremeCourt.gov
official | Jul 2, 2026
SupremeCourt.gov
official | Jul 2, 2026