Examiner Kun Xu

Appears inactive Last observed office action: September 2025 (7 months ago).

Examiner Kun Xu appears to be about average relative to their peer examiners. Their lifetime grant ratio is 3.6%, they average 1.00 office actions per granted patent, and their rejection profile is dominated by §103.

Difficulty vs AU About Average

Difficulty vs Group About Average

Difficulty vs TC About Average

Difficulty vs USPTO About Average

Average OA / Grant 1.00

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Examiner Details

Observed Examiner Years: 18 years (2008-2025)
Tech Center: 2800 - Semiconductors, Electrical and Optical Systems and Components
Group: 2820 - Semiconductors A / Memory

Metrics

Applications Evaluated: 28
Granted Applications: 1
Non-Granted Applications: 27
Avg OA / Grant: 1.00
Last OA Observed: September 2025 (7 months ago)
Art Units Seen: 2827
Work Groups Seen: 2820 - Semiconductors A / Memory

Context Comparison

Scope	Examiners	Lifetime Grant Ratio	Avg OA / Grant
This Examiner	1	3.6%	1.00
Art Unit	26	78.1%	1.39
Group	205	73.0%	1.64
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	7	0	0.0%
No observed data for 2009-2011.
2012	2	0	0.0%
2013	1	0	0.0%
2014	6	0	0.0%
2015	5	0	0.0%
2016	5	0	0.0%
No observed data for 2017.
2018	1	1	100.0%
No observed data for 2019-2024.
2025	1	0	0.0%
No observed data after 2025; examiner may have gone inactive or moved out of examining work.

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

Rejection Timeline

OA #	Office Actions	§ 101 Percentage	§ 102 Percentage	§ 103 Percentage	§ 112 Percentage
1	27	0.0%	22.2%	70.4%	3.7%
2	10	0.0%	10.0%	80.0%	0.0%