Prosecution Insights
Last updated: October 25, 2026

USPTO Art Unit 2638: Examiners and Allowance Rates

19 examiners • 15 with pending office actions • Communications (Tech Center 2600)

Art unit baseline (last 5 years, 2,612 dispositions): 93% allowance rate • 2.9 office actions per allowance • 896 days median pendency
ExaminerAllowance rateResolved casesPending apps
John H Morehead III100.0%150
Jason M Perilla100.0%10
Amy R Hsu96.0%17614
Gevell V Selby94.4%21315
Marly S.B. Camargo93.7%1428
Shahbaz Nazrul92.2%16715
Pritham David Prabhakher92.1%1149
Tuan H Le92.0%504
Abdelaaziz Tissire91.9%17310
Chan T H Nguyen91.9%12312
Fayez A Bhuiyan91.2%918
Nhan T Tran91.1%1589
Mekonnen D Dagnew88.7%1419
Gary C Vieaux88.6%16714
Steven Daniel Barry88.6%3514
Chriss S Yoder III88.5%12214
Nicholas G Giles88.0%500
Lin Ye68.4%196
Christopher E Mahoney0.0%10

Frequently Asked Questions

What is the allowance rate in USPTO Art Unit 2638?

92.9% over the last five years, across 2,612 resolved applications.

Which examiners in Art Unit 2638 have the highest allowance rates?

Among examiners with at least 30 resolved applications: Amy R Hsu (96.0%, 176 resolved), Gevell V Selby (94.4%, 213 resolved), Marly S.B. Camargo (93.7%, 142 resolved).

Which examiners in Art Unit 2638 have the lowest allowance rates?

Among examiners with at least 30 resolved applications: Nicholas G Giles (88.0%, 50 resolved), Chriss S Yoder III (88.5%, 122 resolved), Steven Daniel Barry (88.6%, 35 resolved).

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