Prosecution Insights
Last updated: October 08, 2026

USPTO Art Unit 2638: Examiners and Allowance Rates

19 examiners • 14 with pending office actions • Communications (Tech Center 2600)

Art unit baseline (last 5 years, 2,581 dispositions): 93% allowance rate • 3.0 office actions per allowance • 895 days median pendency
ExaminerAllowance rateResolved casesPending apps
John H Morehead III100.0%150
Jason M Perilla100.0%10
Amy R Hsu96.0%17411
Gevell V Selby94.4%21315
Marly S.B. Camargo93.6%1419
Shahbaz Nazrul92.1%16518
Pritham David Prabhakher91.8%1108
Chan T H Nguyen91.7%12116
Abdelaaziz Tissire91.7%16911
Tuan H Le91.5%474
Fayez A Bhuiyan91.0%894
Nhan T Tran90.8%1537
Mekonnen D Dagnew88.6%1409
Gary C Vieaux88.5%16511
Chriss S Yoder III88.2%11913
Steven Daniel Barry88.2%3412
Nicholas G Giles88.0%500
Lin Ye66.7%180
Christopher E Mahoney0.0%10

Frequently Asked Questions

What is the allowance rate in USPTO Art Unit 2638?

92.8% over the last five years, across 2,581 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%, 174 resolved), Gevell V Selby (94.4%, 213 resolved), Marly S.B. Camargo (93.6%, 141 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 (88.2%, 119 resolved), Steven Daniel Barry (88.2%, 34 resolved).

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