Examiner Amy Wierenga

Appears inactive Last observed office action: March 2023 (37 months ago).

Examiner Amy Wierenga appears to be about average relative to their peer examiners. Their lifetime grant ratio is 97.2%, they average 1.29 office actions per granted patent, and their rejection profile is dominated by §112 and elevated §112 usage.

Difficulty vs AU About Average

Difficulty vs Group About Average

Difficulty vs TC About Average

Difficulty vs USPTO Very Easy

Average OA / Grant 1.29

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Examiner Details

Observed Examiner Years: 10 years (2014-2023)
Tech Center: 2900 - Designs
Group: 2910 - Design Workgroups 2910

Metrics

Applications Evaluated: 436
Granted Applications: 424
Non-Granted Applications: 12
Avg OA / Grant: 1.29
Last OA Observed: March 2023 (37 months ago)
Art Units Seen: 2914 , 2919
Work Groups Seen: 2900-WG - 2900-WG

2910 - Design Workgroups 2910

Context Comparison

Scope	Examiners	Lifetime Grant Ratio	Avg OA / Grant
This Examiner	1	97.2%	1.29
Art Unit	24	94.1%	1.25
Group	24	94.1%	1.25
Tech Center	486	94.9%	1.20
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 2014; examiner may not yet have been active in the available dataset.
2014	24	23	95.8%
2015	51	49	96.1%
2016	76	72	94.7%
2017	74	73	98.6%
2018	80	79	98.8%
2019	101	98	97.0%
2020	26	26	100.0%
No observed data for 2021.
2022	3	3	100.0%
2023	1	1	100.0%
No observed data after 2023; examiner may have gone inactive or moved out of examining work.

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

Rejection Timeline

OA #	Office Actions	§ 101 Percentage	§ 102 Percentage	§ 103 Percentage	§ 112 Percentage
1	444	0.0%	2.5%	4.5%	83.3%
2	117	0.0%	5.1%	17.1%	70.1%
3	18	0.0%	0.0%	55.6%	38.9%
4	3	0.0%	0.0%	66.7%	33.3%