PTAB Trial Statistics as of December 4, 2014

This page gives Patent Trial and Appeal Board trial figures as of December 4, 2014, 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 December 4, 2014

Events from September 16, 2012 to December 4, 2014, by trial type:

Measure	IPR	PGR	CBM	DER	Total
Petitions filed	2,144	3	262	5	2,414
Institution decisions: instituted	924	0	120	0	1,044
Institution decisions: denied	428	1	60	3	492
Institution rate (by petition)	68.3%	0.0%	66.7%	0.0%	68.0%
Final written decisions	197	0	20	0	217

Terminations without a final written decision	Count
Settlements	186
Adverse judgment	0
Dismissed	0
Other terminations	8

Fiscal Year 2015 to Date

Events from October 1, 2014 to December 4, 2014:

Measure	IPR	PGR	CBM	DER	Total
Petitions filed	303	1	29	0	333
Institution decisions: instituted	185	0	13	0	198
Institution decisions: denied	75	1	4	0	80
Institution rate (by petition)	71.2%	0.0%	76.5%	—	71.2%
Final written decisions	47	0	3	0	50

Terminations without a final written decision	Count
Settlements	42
Adverse judgment	0
Dismissed	0
Other terminations	0

Change Since November 27, 2014

Between the previous dated page (November 27, 2014) and December 4, 2014, 22 petitions were filed, 15 trials were instituted, 20 petitions were denied institution and 2 final written decisions issued. The cumulative institution rate moved from 68.6% to 68.0%.

Trial Types Covered

2,144 of the 2,414 petitions (88.8%) 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 (262), post-grant review under chapter 32 (3) and derivation proceedings (5). 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 December 4, 2014: 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 November 27, 2014 (previous date)
• PTAB trial statistics as of December 18, 2014 (next date)
• PTAB statistics by fiscal year, with charts
• Reading PTAB trial outcomes
• USPTO PTAB statistics (official reports)