PTAB Statistics: Fiscal Year 2027 to Date

This page reports Patent Trial and Appeal Board trial activity in fiscal year 2027, which began on October 1, 2026; the figures run to October 31, 2026, the date the data were retrieved. Each figure is a count of USPTO Open Data Portal records; the methodology on the statistics page explains the counting rules.

Figures by Trial Type

Petitions are counted by filing date. Institution decisions, final written decisions and terminations are counted by the date of the event, so a petition filed in one fiscal year may be decided in the next.

Measure	IPR	PGR	CBM	DER	Total
Petitions filed	27	6	0	0	33
Institution decisions: instituted	16	3	0	0	19
Institution decisions: denied	6	1	0	0	7
Institution rate (by petition)	72.7%	75.0%	—	—	73.1%
Final written decisions	25	6	0	0	31

Terminations without a final written decision	Count
Settlements	5
Settled before institution	2
Settled after institution	3
Adverse judgment	0
Dismissed	0
Other terminations	1

Figures by Trial Type in Detail

Inter Partes Review (IPR)

From October 1, 2026 to October 31, 2026, 27 IPR petitions were filed (81.8% of all AIA petitions). Of 22 IPR institution decisions, 16 instituted a trial and 6 denied institution, a rate of 72.7%. The Board issued 25 IPR final written decisions. An IPR may be instituted only on a reasonable likelihood that the petitioner will prevail on at least one claim (35 U.S.C. § 314(a)), on grounds of anticipation or obviousness over patents and printed publications. See the inter partes review guide for the procedure.

Post-Grant Review (PGR)

From October 1, 2026 to October 31, 2026, 6 PGR petitions were filed (18.2% of all AIA petitions). Of 4 PGR institution decisions, 3 instituted a trial and 1 denied institution, a rate of 75.0%. The Board issued 6 PGR final written decisions. A PGR petition must be filed within nine months of grant and must show that it is more likely than not that at least one claim is unpatentable (35 U.S.C. § 324(a)). See the post-grant review guide for the procedure.

How Proceedings Ended

Of the proceedings that ended during the period, 31 ended in a final written decision under 35 U.S.C. § 318, 5 in settlement under 35 U.S.C. § 317 (2 before institution and 3 after), 0 in adverse judgment, 0 by dismissal and 1 by other termination. Denials of institution are counted separately above. A final written decision can lead to estoppel against the petitioner; see estoppel arising from PTAB trials.

Summary

• Inter partes review accounted for 81.8% of petitions filed.
• By type, the institution rate was 72.7% for IPR petitions and 75.0% for PGR petitions.
• Of 37 proceedings that ended after institution or by settlement or other termination in the year, 31 (83.8%) ended in a final written decision.
• These are partial-year figures; they will change as the year continues.

Other Fiscal Years

FY2026 · All fiscal years and charts

Final written decision outcomes (all, some or no challenged claims unpatentable) are not reported because the USPTO records state them for too few decisions; see the methodology. Figures may differ from the USPTO’s published reports. For how trials end and why reported rates differ, see reading PTAB trial outcomes.