PTAB Trial Statistics as of December 18, 2014

This page gives Patent Trial and Appeal Board trial figures as of December 18, 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 18, 2014

Events from September 16, 2012 to December 18, 2014, by trial type:

Measure	IPR	PGR	CBM	DER	Total
Petitions filed	2,216	3	271	6	2,496
Institution decisions: instituted	981	0	123	0	1,104
Institution decisions: denied	461	1	61	3	526
Institution rate (by petition)	68.0%	0.0%	66.8%	0.0%	67.7%
Final written decisions	209	0	26	0	235

Terminations without a final written decision	Count
Settlements	209
Adverse judgment	0
Dismissed	0
Other terminations	8

Fiscal Year 2015 to Date

Events from October 1, 2014 to December 18, 2014:

Measure	IPR	PGR	CBM	DER	Total
Petitions filed	375	1	38	1	415
Institution decisions: instituted	242	0	16	0	258
Institution decisions: denied	108	1	5	0	114
Institution rate (by petition)	69.1%	0.0%	76.2%	—	69.4%
Final written decisions	59	0	9	0	68

Terminations without a final written decision	Count
Settlements	65
Adverse judgment	0
Dismissed	0
Other terminations	0

Change Since December 4, 2014

Between the previous dated page (December 4, 2014) and December 18, 2014, 82 petitions were filed, 60 trials were instituted, 34 petitions were denied institution and 18 final written decisions issued. The cumulative institution rate moved from 68.0% to 67.7%.

Trial Types Covered

2,216 of the 2,496 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 (271), post-grant review under chapter 32 (3) and derivation proceedings (6). 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 18, 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 December 4, 2014 (previous date)
• PTAB trial statistics as of January 1, 2015 (next date)
• PTAB statistics by fiscal year, with charts
• Reading PTAB trial outcomes
• USPTO PTAB statistics (official reports)