Prosecution Insights
Last updated: October 08, 2026

USPTO Art Unit 1677: Examiners and Allowance Rates

37 examiners • 12 with pending office actions • Biotechnology & Pharmaceuticals (Tech Center 1600)

Art unit baseline (last 5 years, 1,231 dispositions): 32% allowance rate • 5.5 office actions per allowance • 1,676 days median pendency
ExaminerAllowance rateResolved casesPending apps
Dirk R Bass100.0%10
Arlen Soderquist100.0%10
Christopher L Chin85.0%40018
Changhwa J Cheu76.7%300
Gary W Counts74.1%270
Ann Y Montgomery73.7%1370
Rebecca M Giere72.3%32524
Shafiqul Haq72.0%250
Melanie Yu Brown70.2%2720
Ellis Follett Lusi64.4%7321
Nam P Nguyen62.5%160
Gailene Gabel61.5%260
Christopher Ryan Evans60.9%2324
Erik B Crawford60.8%2270
Lisa V Cook60.0%150
Richard P Moerschell59.5%1110
Pensee T Do59.0%1000
Xiaoyan Nmn Zou57.9%190
Andrea S Grossman57.1%210
Gary E Hollinden55.7%1310
James Herbert Atwell50.0%80
Galina M Yakovleva48.1%270
Bao Thuy L Nguyen48.1%10610
Estifanos Hailu45.5%110
Jennifer Hoang-Gia Tieu41.2%340
Ellen Jean Marcsisin36.0%13641
Christine E Foster33.3%210
Kyung E Sung33.3%60
Chau Nguyen Bich Tran31.6%7614
Alexander Alexandrovic Volkov29.5%9526
Carmencita Belei21.1%190
Stefanie Johanna Kirwin15.6%4516
Mark Lance Shibuya3.8%260
Daniela E Fuentes0.0%341
Ramdane Harouaka0.0%60
Elizabeth Bisola Oguntade0.0%127
Alexander Joseph Hoffman—022

Frequently Asked Questions

What is the allowance rate in USPTO Art Unit 1677?

32.3% over the last five years, across 1,231 resolved applications.

Which examiners in Art Unit 1677 have the highest allowance rates?

Among examiners with at least 30 resolved applications: Christopher L Chin (85.0%, 400 resolved), Changhwa J Cheu (76.7%, 30 resolved), Ann Y Montgomery (73.7%, 137 resolved).

Which examiners in Art Unit 1677 have the lowest allowance rates?

Among examiners with at least 30 resolved applications: Daniela E Fuentes (0.0%, 34 resolved), Stefanie Johanna Kirwin (15.6%, 45 resolved), Alexander Alexandrovic Volkov (29.5%, 95 resolved).

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