Prosecution Insights
Last updated: October 25, 2026

USPTO Art Unit 2631: Examiners and Allowance Rates

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

Art unit baseline (last 5 years, 4,897 dispositions): 82% allowance rate • 2.9 office actions per allowance • 621 days median pendency
ExaminerAllowance rateResolved casesPending apps
Syed Haider100.0%20
Dac V Ha100.0%20
Chieh M Fan100.0%10
Don Nguyen Vo100.0%10
Docket Central100.0%10
Freshteh N Aghdam100.0%10
Janice N Tieu100.0%10
Jean B Corrielus100.0%10
Berhanu Tadese100.0%10
Alison T Slater100.0%10
Kevin Michael Burd100.0%10
Rahel Guarino96.3%2950
Khanh C Tran94.1%7120
Helene E Tayong93.6%67311
David S Huang92.4%56913
Michael R Neff92.0%83828
Kevin Kim89.8%3930
Curtis B Odom89.5%56214
Dhaval V Patel89.4%1,08918
Kabir A Timory88.8%91125
Kenneth T Lam88.6%79017
Hirdepal Singh87.5%92318
Gina M Mckie86.4%3520
Lihong Yu85.9%70813
Nader Bolourchi84.9%61616
Sung S Ahn83.8%3835
Ross E Varndell80.8%2650
David B Lugo78.9%56010
Hannah S Wang66.7%66
Young Toi Tse50.0%20
Alexandre Paul Jean Dixneuf—05

Frequently Asked Questions

What is the allowance rate in USPTO Art Unit 2631?

81.6% over the last five years, across 4,897 resolved applications.

Which examiners in Art Unit 2631 have the highest allowance rates?

Among examiners with at least 30 resolved applications: Rahel Guarino (96.3%, 295 resolved), Khanh C Tran (94.1%, 712 resolved), Helene E Tayong (93.6%, 673 resolved).

Which examiners in Art Unit 2631 have the lowest allowance rates?

Among examiners with at least 30 resolved applications: David B Lugo (78.9%, 560 resolved), Ross E Varndell (80.8%, 265 resolved), Sung S Ahn (83.8%, 383 resolved).

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