Prosecution Insights
Last updated: October 25, 2026

USPTO Art Unit 2171: Examiners and Allowance Rates

43 examiners • 12 with pending office actions • Computing & Software (Tech Center 2100)

Art unit baseline (last 5 years, 3,067 dispositions): 56% allowance rate
ExaminerAllowance rateResolved casesPending apps
Mariela D Reyes100.0%20
Daryl C Pope100.0%10
Phuong H Nguyen100.0%10
Usmaan Saeed100.0%10
Andrew L Tank100.0%10
Samuel G Neway100.0%10
Oscar Wehovz100.0%10
Matthew J Ludwig92.7%1230
Cao H Nguyen91.6%98720
Ting Zhou Lee88.9%908
Asher Kells88.5%17415
Xiomara L Bautista88.4%4990
Keith D Bloomquist79.9%16438
Andrea C. Leggett78.2%63814
Daniel Samwel73.9%34810
Mahelet Shiberou73.7%58523
Patrick F Riegler73.4%9421
Kieu D Vu71.4%1411
Ryan F Pitaro70.9%2850
Phenuel S Salomon70.5%5110
Maryam M Ipakchi69.4%2190
Stephen D Alvesteffer69.3%1920
William C Trapanese69.2%4520
Hua Lu65.8%4150
Alvaro Rafael Calderon Santiago62.7%6716
Michael Roswell62.5%240
Yongjia Pan59.1%1490
Jordany Nunez56.3%3500
Tuan S Nguyen53.8%1190
Kenny Nguyen53.0%19815
Gabriel S Mercado52.6%7828
Matthew Ell52.2%230
David V Luu48.3%1780
Mary E Dixon46.2%130
Ryan S Barrett43.6%1010
Abdullah Al Kawsar38.5%130
Samuel Shen29.4%510
David H Tan29.2%480
William D Titcomb9.1%110
Farshad Jason Farhadian7.1%140
Matthew M Kim0.0%70
Claudia B Dragoescu0.0%50
Phoebe X Pan0.0%10

Frequently Asked Questions

What is the allowance rate in USPTO Art Unit 2171?

56.1% over the last five years, across 3,067 resolved applications.

Which examiners in Art Unit 2171 have the highest allowance rates?

Among examiners with at least 30 resolved applications: Matthew J Ludwig (92.7%, 123 resolved), Cao H Nguyen (91.6%, 987 resolved), Ting Zhou Lee (88.9%, 90 resolved).

Which examiners in Art Unit 2171 have the lowest allowance rates?

Among examiners with at least 30 resolved applications: David H Tan (29.2%, 48 resolved), Samuel Shen (29.4%, 51 resolved), Ryan S Barrett (43.6%, 101 resolved).

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