PTAB Trial Statistics as of July 31, 2015

This page gives Patent Trial and Appeal Board trial figures as of July 31, 2015, which falls in fiscal year 2015 (October 1, 2014 to September 30, 2015). The cumulative figures run from September 16, 2012, when AIA trials began. The full year is covered on the FY2015 statistics page.

Cumulative Figures as of July 31, 2015

Events from September 16, 2012 to July 31, 2015, by trial type:

Measure	IPR	PGR	CBM	DER	Total
Petitions filed	3,277	10	368	8	3,663
Institution decisions: instituted	1,496	2	192	0	1,690
Institution decisions: denied	936	2	101	3	1,042
Institution rate (by petition)	61.5%	50.0%	65.5%	0.0%	61.9%
Final written decisions	474	0	58	0	532

Terminations without a final written decision	Count
Settlements	385
Adverse judgment	0
Dismissed	0
Other terminations	30

Fiscal Year 2015 to Date

Events from October 1, 2014 to July 31, 2015:

Measure	IPR	PGR	CBM	DER	Total
Petitions filed	1,436	8	135	3	1,582
Institution decisions: instituted	757	2	85	0	844
Institution decisions: denied	583	2	45	0	630
Institution rate (by petition)	56.5%	50.0%	65.4%	—	57.3%
Final written decisions	324	0	41	0	365

Terminations without a final written decision	Count
Settlements	241
Adverse judgment	0
Dismissed	0
Other terminations	22

Change Since June 30, 2015

Between the previous dated page (June 30, 2015) and July 31, 2015, 123 petitions were filed, 84 trials were instituted, 89 petitions were denied institution and 35 final written decisions issued. The cumulative institution rate moved from 62.8% to 61.9%.

Trial Types Covered

3,277 of the 3,663 petitions (89.5%) were for inter partes review, which challenges patent claims on prior-art grounds under 35 U.S.C. chapter 31. The remainder were for covered business method review (368), post-grant review under chapter 32 (10) and derivation proceedings (8). Institution standards differ by proceeding; see the threshold standards.

How These Figures Were Compiled

The figures are counted from USPTO Open Data Portal records retrieved on October 31, 2026, keeping only events dated on or before July 31, 2015: a petition by its filing date, an institution decision by its decision date, and a final written decision or termination by its date. They are a reconstruction from the current records, not the USPTO’s report of that date, and may differ from statistics the USPTO published at the time. Final written decision outcomes are not reported because the records state them for too few decisions. The methodology gives the counting rules in full.

Related Statistics

• PTAB statistics for fiscal year 2015
• PTAB trial statistics as of June 30, 2015 (previous date)
• PTAB trial statistics as of August 31, 2015 (next date)
• PTAB statistics by fiscal year, with charts
• Reading PTAB trial outcomes
• USPTO PTAB statistics (official reports)