Prosecution Insights
Last updated: October 25, 2026

USPTO Art Unit 2649: Examiners and Allowance Rates

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

Art unit baseline (last 5 years, 5,034 dispositions): 65% allowance rate • 2.7 office actions per allowance • 919 days median pendency
ExaminerAllowance rateResolved casesPending apps
Stacey A Sorawat100.0%40
Joshua L Schwartz100.0%215
Jeanette J Parker100.0%10
Md K Talukder100.0%10
Daniel D Chang100.0%10
Daniel Christian Paglia100.0%10
Sonny Trinh98.8%830
John J Lee95.0%50516
Tuan Hoang Nguyen94.7%54814
Quochien B Vuong94.0%500
Nhan T Le92.8%6230
Hai V Nguyen90.4%71215
Thanh C Le89.8%3710
Blane J Jackson89.0%3900
Lee Nguyen88.7%5590
Tilahun Gesesse87.9%3970
Lester G Kincaid87.7%5725
Charles Chiang Chow87.5%80
Angelica Perez86.7%38417
Marceau Milord86.4%2350
Ayodeji O Ayotunde86.2%6145
Tuan Pham85.9%64411
Ganiyu A Hanidu85.8%2820
Ajibola A Akinyemi85.6%73626
Fayyaz Alam85.6%4500
Nguyen Thanh Vo85.2%4470
Shaima Q Aminzay85.1%1740
Swati Jain85.0%13331
Mohammed Rachedine83.5%4010
Christian A Hannon83.0%1590
Ankur Jain82.6%4537
Samuel Hayden Leonard82.5%4017
Pablo N Tran81.3%2990
Tu X Nguyen80.5%3030
Simon Nguyen80.4%4490
Golam Sorowar80.4%4280
Zhitong Chen76.9%54116
Max Mathew76.0%2040
Mario Ricardo Campero Miramonte75.0%422
Xin Jia74.1%2160
Erica L Fleming-Hall72.7%330
Raymond S Dean69.3%3650
Junpeng Chen68.0%3590
Ralph H Justus67.5%1690
Hsinchun Liao64.6%3280
Rui Meng Hu64.1%2700
Paul P Tran62.4%2210
Fatuma G Sherif60.1%33812
Fanghwa Wang51.4%1810
Zhiyu Lu36.6%2540
Mark Woodall34.0%530
Yuwen Pan20.7%823
Edward F Urban14.3%70
Joseph H Tam0.0%30
Sayed T Zewari0.0%10
Matthew James Dwyer—024
Seahvosh J Nikmanesh—017
Benjamin Huy Dinh Nguyen—013

Frequently Asked Questions

What is the allowance rate in USPTO Art Unit 2649?

65.4% over the last five years, across 5,034 resolved applications.

Which examiners in Art Unit 2649 have the highest allowance rates?

Among examiners with at least 30 resolved applications: Sonny Trinh (98.8%, 83 resolved), John J Lee (95.0%, 505 resolved), Tuan Hoang Nguyen (94.7%, 548 resolved).

Which examiners in Art Unit 2649 have the lowest allowance rates?

Among examiners with at least 30 resolved applications: Yuwen Pan (20.7%, 82 resolved), Mark Woodall (34.0%, 53 resolved), Zhiyu Lu (36.6%, 254 resolved).

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