Prosecution Insights
Last updated: October 25, 2026

USPTO Art Unit 2647: Examiners and Allowance Rates

57 examiners • 14 with pending office actions • Communications (Tech Center 2600)

Art unit baseline (last 5 years, 4,466 dispositions): 72% allowance rate • 4.5 office actions per allowance • 1,041 days median pendency
ExaminerAllowance rateResolved casesPending apps
Iyonda Latifah Lewis100.0%522
Chieh M Fan100.0%10
Duc Chi Ho100.0%10
Dhaval V Patel100.0%10
Joel Ajayi100.0%10
Ayodeji O Ayotunde96.4%550
Diane D Mizrahi96.1%46418
Jr, Joseph E Dean95.0%35814
Inder P Mehra94.4%2310
Simon Nguyen93.9%330
John J Lee93.5%3560
Congvan Tran93.0%41426
Nizar N Sivji92.9%43721
Sanh D Phu92.2%2960
Sonny Trinh92.0%3230
Tuan Pham91.8%490
Brandon J Miller91.6%36916
Quochien B Vuong91.0%2110
Tuan Hoang Nguyen90.9%5150
Dominic E Rego90.9%3940
Tu X Nguyen88.1%1010
Marcus C Hammonds88.1%24421
Alison T Slater87.8%412
Lee Nguyen87.3%630
Asghar H Bilgrami86.7%1730
Keith Ferguson86.4%1910
Nhan T Le86.2%580
Andrew Wendell86.0%2570
Ajibola A Akinyemi85.9%640
Eugene Yun85.7%3560
Shaima Q Aminzay85.3%750
Nam Trung Huynh84.7%22923
Muthuswamy Ganapathy Manoharan83.9%25539
Hai V Nguyen83.1%650
Dinh Nguyen82.3%2540
Umair Ahsan82.0%25518
Hung K Du81.5%810
Marcos L Torres78.7%30138
Ankur Jain77.8%360
Cindy Huyen Trandai75.0%2080
Ping Y Hsieh74.7%1820
Duc M Nguyen74.4%2730
Alejandro Rivero74.4%2340
Zhitong Chen72.4%760
Jing Gao72.3%20231
Angelica Perez71.9%1920
Ganiyu A Hanidu71.4%770
Yuwen Pan66.7%60
David Bilodeau65.8%790
Fatuma G Sherif63.3%300
Maryam Soltanzadeh61.9%1180
Erica L Fleming-Hall57.1%2190
Paul P Tran56.2%960
Jianxun Yang55.7%2100
Srilakshmi K Kumar0.0%30
Vincent M Rudolph0.0%10
Fatiha Kamal—010

Frequently Asked Questions

What is the allowance rate in USPTO Art Unit 2647?

72.3% over the last five years, across 4,466 resolved applications.

Which examiners in Art Unit 2647 have the highest allowance rates?

Among examiners with at least 30 resolved applications: Ayodeji O Ayotunde (96.4%, 55 resolved), Diane D Mizrahi (96.1%, 464 resolved), Jr, Joseph E Dean (95.0%, 358 resolved).

Which examiners in Art Unit 2647 have the lowest allowance rates?

Among examiners with at least 30 resolved applications: Jianxun Yang (55.7%, 210 resolved), Paul P Tran (56.2%, 96 resolved), Erica L Fleming-Hall (57.1%, 219 resolved).

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