Prosecution Insights
Last updated: October 25, 2026

USPTO Art Unit 2831: Examiners and Allowance Rates

83 examiners • 32 with pending office actions • Semiconductors, Circuits & Optics (Tech Center 2800)

Art unit baseline (last 5 years, 7,973 dispositions): 72% allowance rate • 2.3 office actions per allowance • 926 days median pendency
ExaminerAllowance rateResolved casesPending apps
Edwin A Leon Munoz100.0%40717
Anthony R Jimenez100.0%15436
William A Bolton100.0%7821
Paul D Baillargeon100.0%5029
Jason M Collins100.0%3416
Michael James Walker100.0%1211
Matthew Daniel Hwang100.0%830
Oscar C Jimenez100.0%717
Kevin Andrew Johnston100.0%48
Leah Simone Macchiarolo100.0%37
Carmelo B Oliva100.0%10
Cassi J Galt100.0%10
Tho Gia Phan100.0%10
Anthony D Tugbang100.0%10
Anton B Harris100.0%10
Truc T Nguyen100.0%10
James P Duffy100.0%10
Michael C Zarroli100.0%10
Hai V Nguyen100.0%10
Lheiren Mae Anglo Caroc98.6%21520
Kyung S Lee98.4%24514
Felix O Figueroa98.2%16434
Ahmed M Saeed98.2%10930
Sean Phillip Kayes97.7%8821
Peter G Leigh92.7%7950
Khiem M Nguyen92.5%4000
Nelson R Burgos-Guntin92.5%59917
Nader J Alhawamdeh91.7%64821
Syed M Kaiser91.7%36015
Dixomara Vargas Montalvo90.4%1460
Travis Sloan Chambers89.9%78418
Phuong K Dinh89.8%75318
Vladimir Imas89.5%5500
Marcus E Harcum89.4%58323
Nguyen T Ha89.2%1390
Tho Dac Ta88.0%6730
Thanh Tam T Le87.8%85030
Hae M Hyeon87.2%69615
Amara Anderson87.2%7810
Hien D Vu87.0%3380
Megann E Vaughn87.0%460
Vincent Q Nguyen86.9%1750
Brij B Shrivastav86.8%1060
Louis M Arana86.7%1660
Justin M Kratt86.7%67940
Javaid H Nasri86.6%1870
Neil Abrams86.4%2940
Alexander Gilman86.2%9820
Phuong Chi Thi Nguyen85.4%2880
Thang H Nguyen84.8%63114
Harshad C Patel83.9%75329
Timothy J Dole83.6%1160
Chandrika Prasad83.5%3340
Renee S Luebke83.3%65
Angel R Estrada82.6%1840
Tiffany A Fetzner82.3%960
William H Mayo III81.8%1700
John X Zhu81.2%800
Abdullah A Riyami81.1%373
Hoai An D Nguyen80.9%940
Eric W Thomas80.6%1550
Dhirubhai R Patel79.4%1700
Jeff William Natalini78.2%1100
Amy He77.7%1030
Benjamin M Baldridge77.0%1130
Chau N Nguyen76.8%2630
Julio Cesar Gonzalez72.7%43221
Farhana Akhter Hoque72.4%580
Pedro J Cuevas70.7%3240
Hung V Ngo69.7%1450
Thomas K Quigley67.0%1880
Joseph Waks65.4%1270
Charles H Reid Jr.62.7%2010
Viet P Nguyen57.4%2890
Joseph Ortega56.2%960
David M Sinclair52.6%1350
Sean A Gugger51.9%2410
Thomas F Valone50.8%650
Stefan Mikailoff45.4%1940
Tulsidas C Patel5.0%200
Diego F Gutierrez0.0%90
Ramsey Lane Stuart—03
Julian Rin Dinh Arrivillaga—02

Frequently Asked Questions

What is the allowance rate in USPTO Art Unit 2831?

72.3% over the last five years, across 7,973 resolved applications.

Which examiners in Art Unit 2831 have the highest allowance rates?

Among examiners with at least 30 resolved applications: Edwin A Leon Munoz (100.0%, 407 resolved), Anthony R Jimenez (100.0%, 154 resolved), William A Bolton (100.0%, 78 resolved).

Which examiners in Art Unit 2831 have the lowest allowance rates?

Among examiners with at least 30 resolved applications: Stefan Mikailoff (45.4%, 194 resolved), Thomas F Valone (50.8%, 65 resolved), Sean A Gugger (51.9%, 241 resolved).

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