Examiner Himchan Song

Examiner Himchan Song appears to be very easy relative to their art unit, group, tech center, and USPTO peers. Their lifetime grant ratio is 82.7%, they average 1.77 office actions per granted patent, and their rejection profile is dominated by §103 and elevated §112 usage.

Difficulty vs AU Very Easy

Difficulty vs Group Very Easy

Difficulty vs TC Very Easy

Difficulty vs USPTO Very Easy

Average OA / Grant 1.77

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Examiner Details

Observed Examiner Years: 8 years (2019-2026)
Phone: (571) 272-4142
Predicted Supervisor: Anna Kinsaul
Supervisor Phone: (571) 270-1926
Tech Center: 3700 - Mechanical Engineering, Manufacturing and Products
Group: 3730 - Sheet Container Making, Package Making, Apparel, and Tool Driving

Metrics

Applications Evaluated: 255
Granted Applications: 211
Non-Granted Applications: 44
Avg OA / Grant: 1.77
Last OA Observed: March 2026 (2 months ago)
Art Units Seen: 3731
Work Groups Seen: 3730 - Sheet Container Making, Package Making, Apparel, and Tool Driving

Context Comparison

Scope	Examiners	Lifetime Grant Ratio	Avg OA / Grant
This Examiner	1	82.7%	1.77
Art Unit	50	62.0%	2.22
Group	288	51.1%	2.22
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 2019; examiner may not yet have been active in the available dataset.
2019	28	22	78.6%
2020	40	31	77.5%
2021	40	34	85.0%
2022	20	17	85.0%
2023	36	33	91.7%
2024	50	45	90.0%
2025	35	29	82.9%
2026	6	0	0.0%

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

Rejection Timeline

OA #	Office Actions	§ 101 Percentage	§ 102 Percentage	§ 103 Percentage	§ 112 Percentage
1	255	0.0%	13.3%	59.2%	26.3%
2	112	0.0%	15.2%	75.0%	9.8%
3	52	0.0%	7.7%	71.2%	21.2%
4	21	0.0%	9.5%	66.7%	23.8%
5	12	0.0%	8.3%	58.3%	33.3%
6	3	0.0%	66.7%	33.3%	0.0%
7	2	0.0%	0.0%	100.0%	0.0%