Examiner Charles Zheng

Appears inactive Last observed office action: December 2015 (124 months ago).

Examiner Charles Zheng appears to be very difficult relative to their art unit, group, tech center, and USPTO peers. Their lifetime grant ratio is 33.1%, they average 2.39 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 2.39

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Examiner Details

Observed Examiner Years: 5 years (2011-2015)
Tech Center: 2600 - Communications
Group: 2620 - Selective Visual Display Systems

Metrics

Applications Evaluated: 163
Granted Applications: 54
Non-Granted Applications: 109
Avg OA / Grant: 2.39
Last OA Observed: December 2015 (124 months ago)
Art Units Seen: 2622 , 2629 , 2694
Work Groups Seen: 2620 - Selective Visual Display Systems

2690 - Videophones and Telephonic Communications / Digital Audio

Context Comparison

Scope	Examiners	Lifetime Grant Ratio	Avg OA / Grant
This Examiner	1	33.1%	2.39
Art Unit	24	56.3%	1.83
Group	280	55.8%	1.99
Tech Center	1,729	59.3%	1.88
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	13	6	46.2%
2012	29	6	20.7%
2013	44	10	22.7%
2014	53	22	41.5%
2015	24	10	41.7%
No observed data after 2015; examiner may have gone inactive or moved out of examining work.

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

Rejection Timeline

OA #	Office Actions	§ 101 Percentage	§ 102 Percentage	§ 103 Percentage	§ 112 Percentage
1	163	0.0%	15.3%	83.4%	1.2%
2	122	0.0%	9.0%	91.0%	0.0%
3	55	0.0%	9.1%	90.9%	0.0%
4	36	0.0%	2.8%	97.2%	0.0%
5	23	0.0%	4.3%	95.7%	0.0%
6	12	0.0%	0.0%	100.0%	0.0%
7	2	0.0%	0.0%	100.0%	0.0%