Examiner William Cheng

Appears inactive Last observed office action: July 2014 (141 months ago).

Examiner William Cheng appears to be very difficult relative to their art unit, group, tech center, and USPTO peers. Their lifetime grant ratio is 17.3%, they average 2.29 office actions per granted patent, and their rejection profile is dominated by §103.

Difficulty vs AU Very Hard

Difficulty vs Group Very Hard

Difficulty vs TC Very Hard

Difficulty vs USPTO Very Hard

Average OA / Grant 2.29

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Examiner Details

Observed Examiner Years: 4 years (2011-2014)
Tech Center: 3700 - Mechanical Engineering, Manufacturing and Products
Group: 3760 - Refrigeration, Vaporization, Ventilation, and Combustion

Metrics

Applications Evaluated: 81
Granted Applications: 14
Non-Granted Applications: 67
Avg OA / Grant: 2.29
Last OA Observed: July 2014 (141 months ago)
Art Units Seen: 3769
Work Groups Seen: 3760 - Refrigeration, Vaporization, Ventilation, and Combustion

Context Comparison

Scope	Examiners	Lifetime Grant Ratio	Avg OA / Grant
This Examiner	1	17.3%	2.29
Art Unit	32	33.6%	2.26
Group	377	50.6%	2.11
Tech Center	2,632	49.9%	2.01
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 2011; examiner may not yet have been active in the available dataset.
2011	9	1	11.1%
2012	28	6	21.4%
2013	30	4	13.3%
2014	14	3	21.4%
No observed data after 2014; examiner may have gone inactive or moved out of examining work.

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

Rejection Timeline

OA #	Office Actions	§ 101 Percentage	§ 102 Percentage	§ 103 Percentage	§ 112 Percentage
1	81	0.0%	6.2%	93.8%	0.0%
2	57	0.0%	0.0%	86.0%	7.0%
3	26	0.0%	0.0%	100.0%	0.0%
4	15	0.0%	0.0%	100.0%	0.0%
5	2	0.0%	0.0%	100.0%	0.0%
6	1	0.0%	0.0%	100.0%	0.0%