Prosecution Insights
Last updated: October 25, 2026

USPTO Art Unit 2191: Examiners and Allowance Rates

44 examiners • 16 with pending office actions • Computing & Software (Tech Center 2100)

Art unit baseline (last 5 years, 3,873 dispositions): 76% allowance rate • 4.2 office actions per allowance • 972 days median pendency
ExaminerAllowance rateResolved casesPending apps
Nicholas S Ulrich100.0%10
Muluemebet Gurmu100.0%10
April Ying Shan Blair100.0%10
Isaac Tuku Tecklu100.0%10
Anil Khatri92.4%9987
Travis Viet Tran91.7%2411
Thomas K Pham91.0%890
Phillip H Nguyen90.7%61310
Daxin Wu87.4%4920
Amir Soltanzadeh87.2%33620
Anna Chen Deng86.0%4790
Hossain M Morshed85.8%37410
Chih Ching Chow85.6%1040
Ryan D Coyer84.0%42510
Yuntao Guo83.3%60
Junchun Wu82.3%4640
Ted T Vo81.2%8247
Satish Rampuria81.0%3360
Qing Chen80.3%70415
Adam Richard Banes80.0%650
Mohammed Nurul Huda78.9%2890
Clint A Thatcher77.7%2420
Feven Habtemariam Huruy75.0%87
Daniel Patrick Elliott75.0%40
Andrew M Lyons73.8%47820
Binh K Luu72.7%1210
Vivian Weijia Duan72.7%2210
Rongfa Philip Wang72.4%870
Zhan Chen69.8%430
Qamrun Nahar69.0%1130
Chung Cheng69.0%290
Matthew J Brophy68.5%62517
Lanny N Ung67.8%3940
Brahim Bourzik64.3%38724
Kevin D Dothager63.2%190
Timothy P Duncan56.8%370
Hiren P Patel56.2%160
Wei Yun Mui54.0%504
Charles M Swift50.0%300
Sao Hsuan Lu50.0%40
Jyoti D Dave20.0%50
Jacob F Betit0.0%10
Kevin Lin—02
Md Kamruzzaman—01

Frequently Asked Questions

What is the allowance rate in USPTO Art Unit 2191?

75.5% over the last five years, across 3,873 resolved applications.

Which examiners in Art Unit 2191 have the highest allowance rates?

Among examiners with at least 30 resolved applications: Anil Khatri (92.4%, 998 resolved), Thomas K Pham (91.0%, 89 resolved), Phillip H Nguyen (90.7%, 613 resolved).

Which examiners in Art Unit 2191 have the lowest allowance rates?

Among examiners with at least 30 resolved applications: Charles M Swift (50.0%, 30 resolved), Wei Yun Mui (54.0%, 50 resolved), Timothy P Duncan (56.8%, 37 resolved).

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