Examiner David Warren

Appears inactive Last observed office action: November 2020 (65 months ago).

Examiner David Warren appears to be very easy relative to their art unit, group, tech center, and USPTO peers. Their lifetime grant ratio is 83.2%, they average 1.33 office actions per granted patent, and their rejection profile is dominated by §103.

Difficulty vs AU Very Easy

Difficulty vs Group Very Easy

Difficulty vs TC Very Easy

Difficulty vs USPTO Very Easy

Average OA / Grant 1.33

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Examiner Details

Observed Examiner Years: 13 years (2008-2020)
Tech Center: 2800 - Semiconductors, Electrical and Optical Systems and Components
Group: 2830 - Electrical Circuits and Systems

Metrics

Applications Evaluated: 820
Granted Applications: 682
Non-Granted Applications: 138
Avg OA / Grant: 1.33
Last OA Observed: November 2020 (65 months ago)
Art Units Seen: 2832 , 2837
Work Groups Seen: 2830 - Electrical Circuits and Systems

Context Comparison

Scope	Examiners	Lifetime Grant Ratio	Avg OA / Grant
This Examiner	1	83.2%	1.33
Art Unit	63	71.7%	1.60
Group	356	68.0%	1.58
Tech Center	2,370	64.7%	1.69
USPTO	16,116	54.8%	1.98

Grant Timeline

Shaded region marks the last two observed years, where grant outcomes may lag due to recency.

Year	Applications	Granted	Grant Rate
No observed data before 2008; examiner may not yet have been active in the available dataset.
2008	63	52	82.5%
2009	72	58	80.6%
2010	76	61	80.3%
2011	63	49	77.8%
2012	70	55	78.6%
2013	63	57	90.5%
2014	66	55	83.3%
2015	65	51	78.5%
2016	69	57	82.6%
2017	44	41	93.2%
2018	62	51	82.3%
2019	66	56	84.8%
2020	41	39	95.1%
No observed data after 2020; examiner may have gone inactive or moved out of examining work.

682 family-cache-validated grants; 0 OA-only grant signals.

Rejection Timeline

OA #	Office Actions	§ 101 Percentage	§ 102 Percentage	§ 103 Percentage	§ 112 Percentage
1	824	1.2%	14.6%	63.3%	7.5%
2	213	0.9%	8.5%	69.5%	7.5%
3	47	4.3%	8.5%	68.1%	6.4%
4	11	9.1%	0.0%	72.7%	18.2%
5	3	0.0%	0.0%	66.7%	0.0%

§ 101 Yearly Trend

2014: Alice

2019: PEG

1.0%

2008

1.9%

2009

1.0%

2010

1.1%

2011

1.1%

2012

2.6%

2013

2.4%

2014

2.5%

2015

1.2%

2016

3.2%

2017

0.0%

2018

0.0%

2019

0.0%

2020

Each bar shows the share of this examiner's observed office actions in that year that included a § 101 rejection.