Prosecution Insights
Last updated: October 08, 2026

USPTO Art Unit 2128: Examiners and Allowance Rates

53 examiners • 12 with pending office actions • Computing & Software (Tech Center 2100)

Art unit baseline (last 5 years, 2,411 dispositions): 39% allowance rate • 4.8 office actions per allowance • 1,459 days median pendency
ExaminerAllowance rateResolved casesPending apps
Ann J Lo100.0%10
Yao D Huang100.0%10
Molly Clarke Sippel100.0%10
Randall P Shaffer100.0%10
Kenneth M Lo100.0%10
Russell Warren Frejd90.7%1940
Thai Q Phan85.8%5140
Dwin M Craig84.4%960
Tsu-Chang Lee81.6%30536
Selene Haedi79.2%770
Brandon S Cole70.6%25239
Shiuh-Huei P Ku70.1%870
Michael D Masinick70.1%1370
David Silver69.3%1270
Saif A Alhija68.9%4920
George Giroux68.9%18323
Kyle R Stork68.3%13943
Hugh M Jones67.6%5460
Angel Javier Calle67.5%1660
Tri T Nguyen67.0%10313
Alexander J Kosowski66.7%150
Nithya Janakiraman Moll65.8%1610
Shambhavi K Patel64.9%2080
Iftekhar A Khan64.7%1700
Michael Christopher Lee62.6%10744
Corey Matthew Sackalosky62.2%4524
Suzanne Lo62.0%2160
Herng Der Day60.4%2400
Kibrom K Gebresilassie59.4%2980
Cuong V Luu58.3%2950
Bijan Mapar54.3%2450
Justin C Mikowski53.6%280
Shamcy Alghazzy52.1%7321
Eric Chenbin Wu50.0%20
Joshua Eric Jensen45.6%790
Omar F Fernandez Rivas45.5%1014
Bernard E Cothran45.3%2120
Em N Trieu44.1%6815
Akash Saxena42.8%3180
Pursottam Giri40.0%100
Joseph J Rokita40.0%100
David Andrew Hopkins39.4%660
Michael Edward Cocchi36.0%500
Quinlan E Stankus33.3%90
Robert S Brock26.8%1900
Chuen-Meei Gan25.0%200
Donald Thomas Roden25.0%817
Chaitanya R Jayakumar21.4%5611
Sheela S Rao16.7%60
Hung T Havan16.2%370
Kamini S Shah12.5%80
Zephyr An Omaly0.0%20
Cordelia P K Zecher0.0%20

Frequently Asked Questions

What is the allowance rate in USPTO Art Unit 2128?

38.7% over the last five years, across 2,411 resolved applications.

Which examiners in Art Unit 2128 have the highest allowance rates?

Among examiners with at least 30 resolved applications: Russell Warren Frejd (90.7%, 194 resolved), Thai Q Phan (85.8%, 514 resolved), Dwin M Craig (84.4%, 96 resolved).

Which examiners in Art Unit 2128 have the lowest allowance rates?

Among examiners with at least 30 resolved applications: Hung T Havan (16.2%, 37 resolved), Chaitanya R Jayakumar (21.4%, 56 resolved), Robert S Brock (26.8%, 190 resolved).

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