Prosecution Insights
Last updated: October 25, 2026

USPTO Art Unit 3781: Examiners and Allowance Rates

86 examiners • 31 with pending office actions • Medical Devices & Mechanical Engineering (Tech Center 3700)

Art unit baseline (last 5 years, 8,314 dispositions): 51% allowance rate • 4.2 office actions per allowance • 1,229 days median pendency
ExaminerAllowance rateResolved casesPending apps
Roy Kim100.0%30
Kevin C Butler100.0%10
Eric Storr Sage Handberg100.0%10
Bibhor P Regmi100.0%10
Jillian Kutch Pierorazio100.0%10
Michael C Miggins100.0%10
Stephanie Chung Kim100.0%10
Virak Nguon100.0%10
Nahida Sultana100.0%10
Tuyen Q Tra100.0%10
Daniel Mcnally100.0%10
David J Walczak100.0%10
Philip R Wiest88.9%44216
Guy K Townsend82.0%46119
Susan Shan Su81.9%49817
Adam M Marcetich79.2%68241
Leslie R Deak79.1%910
Rebecca E Eisenberg78.4%374
Benjamin Jacob Klein78.2%2930
Jacqueline F Stephens77.7%59741
Ilya Y Treyger76.4%3480
Andrew J Mensh75.0%40024
Ariana Zimbouski74.0%39619
Michele M Kidwell72.7%52738
Harry A Grosso72.2%1690
Eric Rassavong70.7%16429
Gregory J Feulner70.0%200
Kai H Weng69.6%34530
Erin Asa Kim69.4%9817
Jessica R Arble69.4%36935
Nhu Tran68.7%13426
Sarah Al Hashimi66.7%540
Catharine L Anderson65.8%48543
Timothy Lee Flynn63.6%888
Brandon William Levy62.9%19423
Hans Christian Kaliher62.9%14039
Alessandro R Del Priore62.0%20820
Elizabeth J Volz62.0%5580
Arjuna P Chatrathi62.0%21334
Cheng Fong Yang61.9%16036
Katherine-Ph Minh Pham59.8%10238
James N Smalley59.6%7100
Seth Han59.6%18841
Matthew James Wrubleski59.3%11839
Meagan N Ngo58.3%21839
Jennifer Castriotta56.6%2860
Stephen J Castellano56.0%6910
Robert J Hicks55.3%2460
Gabriella E Burnette54.7%26514
Sara A Sass54.3%460
Heather K Barnwell54.0%500
Sue A Weaver51.9%9030
Peter Daniel Smith51.3%7827
Madison Lynn Poos51.1%4970
Linnae Elizabeth Raymond50.4%12533
Kate Elizabeth Strachan50.0%11422
Casey M Flanagan50.0%20
Priyadharshi Nmn Seetharaman50.0%20
Niki Marina Eloshway49.8%2610
Jihad Dakkak49.3%7127
Robin Annette Hylton49.3%2110
Christopher Brian Mckinley48.6%4610
Rachel O'Connell47.3%740
Cynthia Francisca Collado41.7%6060
Don M Anderson40.8%2130
Leah Jenna Anne Sibay40.0%50
Robert J Stodola38.5%1220
Andrew Thomas Kirsch36.8%5050
Jeffrey R Allen35.2%5660
Quynh Dao Le33.3%4838
Ned Andrew Walker31.5%1650
Kevin Charles Castillo28.0%1820
Chetan Gattu Chandra27.6%1630
Tri M Mai25.4%8540
Shawn M Braden25.2%1390
Kareen Kay Thomas19.4%980
Fenn C Mathew17.4%690
Nicholas J Weiss15.4%260
Brett J Edwards10.9%1470
Tatyana Zalukaeva3.3%300
Anthony D Stashick0.0%150
Daniel P Tucker0.0%30
Jacob F Betit0.0%10
Martha G Rivas0.0%10
Ronak C Patel0.0%10
Alexander W Zoellick0.0%10

Frequently Asked Questions

What is the allowance rate in USPTO Art Unit 3781?

50.6% over the last five years, across 8,314 resolved applications.

Which examiners in Art Unit 3781 have the highest allowance rates?

Among examiners with at least 30 resolved applications: Philip R Wiest (88.9%, 442 resolved), Guy K Townsend (82.0%, 461 resolved), Susan Shan Su (81.9%, 498 resolved).

Which examiners in Art Unit 3781 have the lowest allowance rates?

Among examiners with at least 30 resolved applications: Tatyana Zalukaeva (3.3%, 30 resolved), Brett J Edwards (10.9%, 147 resolved), Fenn C Mathew (17.4%, 69 resolved).

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