Prosecution Insights
Last updated: October 25, 2026

USPTO Art Unit 2455: Examiners and Allowance Rates

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

Art unit baseline (last 5 years, 2,971 dispositions): 68% allowance rate • 3.8 office actions per allowance • 911 days median pendency
ExaminerAllowance rateResolved casesPending apps
Backhean Tiv100.0%20
Vivek Srivastava100.0%10
Angela Marie Widhalm De Rodrig100.0%10
Joon H Hwang100.0%13
Tonia Lynn Meonske Dollinger100.0%10
Nicholas R Taylor100.0%10
Nam T Tran94.0%1845
Viet D Vu92.6%29815
Azizul Q Choudhury90.2%20411
June Y Sison88.6%1857
Philip B Tran88.1%4950
David R Lazaro87.1%7757
Randy A Scott86.9%2680
Zi Ye85.2%48717
Bharat Barot84.4%3780
Zia Khurshid84.1%2770
Berhanu Shitayewoldetsadi83.8%39415
Tom Y Chang82.8%2921
Farzana B Huq80.1%46211
Michael Young Won77.3%880
Mariegeorges A Henry77.0%5820
Imad Hussain75.8%330
Oanh Duong73.3%600
Mahran Y Abu Roumi73.1%62131
David Y Eng72.0%1820
Faruk Hamza71.4%280
Robert A Shaw68.8%2021
Julian Chang64.4%1630
Vitali A Korobov63.3%1880
Edward J Kim61.3%3410
Shawki Saif Ismail58.4%890
Thuong Nguyen56.9%650
Xiang Yu56.5%3013
Waseem Ashraf56.1%2140
Dhairya A Patel53.8%260
Charles C Murphy51.3%1130
Asad M Nawaz49.3%730
Manuel A Bravo Pagan40.0%50
Sarah E Drabik37.8%1110
Clifton L Houston8.3%120
Emmanuel Lionel Moise8.0%257
Meriam Abisourour0.0%120
Kamal B Divecha0.0%110
Pi-Hui Chao0.0%30
Wahida N Afza0.0%20
Jay Navin Kadiwala0.0%10
Amy Cohen Johnson0.0%10
David S Ampagoomian0.0%10
Sayeem Muhammad Kazi—010

Frequently Asked Questions

What is the allowance rate in USPTO Art Unit 2455?

68.0% over the last five years, across 2,971 resolved applications.

Which examiners in Art Unit 2455 have the highest allowance rates?

Among examiners with at least 30 resolved applications: Nam T Tran (94.0%, 184 resolved), Viet D Vu (92.6%, 298 resolved), Azizul Q Choudhury (90.2%, 204 resolved).

Which examiners in Art Unit 2455 have the lowest allowance rates?

Among examiners with at least 30 resolved applications: Sarah E Drabik (37.8%, 111 resolved), Asad M Nawaz (49.3%, 73 resolved), Charles C Murphy (51.3%, 113 resolved).

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