Prosecution Insights
Last updated: October 25, 2026

USPTO Art Unit 2431: Examiners and Allowance Rates

54 examiners • 15 with pending office actions • Networking & Security (Tech Center 2400)

Art unit baseline (last 5 years, 3,701 dispositions): 77% allowance rate • 3.2 office actions per allowance • 911 days median pendency
ExaminerAllowance rateResolved casesPending apps
Arezoo Sherkat100.0%20
Hamza N Algibhah100.0%10
Kevin Alexis Ayala100.0%10
Michael S Mcnally100.0%10
Mohamed Barakat100.0%10
Madhuri R Herzog100.0%10
Hassan Saadoun100.0%10
Isaac M Woo100.0%10
Sanchit K Sarker100.0%10
Jeffery L Williams100.0%10
Victor D Lesniewski100.0%10
Jason Kai Yin Gee100.0%10
Don Gordon Zhao100.0%10
Mohammad A Siddiqi100.0%10
Stephen T Gundry100.0%10
Ayoub Alata100.0%10
David Yiuk Jung89.3%840
Longbit Chai88.0%7587
Viral S Lakhia87.6%6065
Christopher A Revak86.2%8200
Shin Hon Chen86.2%81118
Jason Chiang83.2%56012
Jeremiah L Avery83.0%7056
Trang T Doan82.8%63512
Jessica J South81.4%590
Sarah Su80.2%6918
Dereena T Cattungal80.1%28714
Kelah Janae Mcfarland-Barnes80.0%1012
Michael R Vaughan78.6%81810
Abdullah Almamun78.4%42514
Vadim Savenkov77.7%1660
Phuoc D Tran76.9%390
Ethan Viet Vo76.1%925
Carolyn M Kosowski74.5%1410
Saad Ahmad Abdullah74.1%8519
Syed Zia72.2%2340
Vladimir I Gavrilenko71.1%1978
Aravind K Moorthy70.0%900
Kaveh Abrishamkar67.3%1680
Richard Anthony Mccoy67.1%2100
Bryan F Wright64.9%2220
Brett Stephen Squires55.6%90
David Garcia Cervetti50.0%20
James R Turchen50.0%20
Matthew T Henning41.9%620
Cordelia P K Zecher37.1%350
Lynn Diana Feild16.7%60
Nathan J Flynn8.3%120
Elliott E Akporherhe6.7%150
William R Korzuch0.0%10
Jacob Lipman0.0%10
Khalid M Almaghayreh0.0%10
Konstantin Shepelev0.0%10
Omar Refat Drakmih—01

Frequently Asked Questions

What is the allowance rate in USPTO Art Unit 2431?

76.5% over the last five years, across 3,701 resolved applications.

Which examiners in Art Unit 2431 have the highest allowance rates?

Among examiners with at least 30 resolved applications: David Yiuk Jung (89.3%, 84 resolved), Longbit Chai (88.0%, 758 resolved), Viral S Lakhia (87.6%, 606 resolved).

Which examiners in Art Unit 2431 have the lowest allowance rates?

Among examiners with at least 30 resolved applications: Cordelia P K Zecher (37.1%, 35 resolved), Matthew T Henning (41.9%, 62 resolved), Bryan F Wright (64.9%, 222 resolved).

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