Prosecution Insights
Last updated: October 25, 2026

USPTO Art Unit 1678: Examiners and Allowance Rates

26 examiners • 11 with pending office actions • Biotechnology & Pharmaceuticals (Tech Center 1600)

Art unit baseline (last 5 years, 2,319 dispositions): 43% allowance rate • 6.7 office actions per allowance • 1,873 days median pendency
ExaminerAllowance rateResolved casesPending apps
Thomas J Visone100.0%20
Paul Sang Hwa Hyun100.0%10
Renee C Langhals100.0%10
Changhwa J Cheu80.8%6310
Gailene Gabel80.7%51315
Ann Y Montgomery76.7%25837
Shafiqul Haq74.5%49136
Lisa V Cook74.3%1520
Gary W Counts64.5%44830
Gregory S Emch64.1%7810
Galina M Yakovleva55.0%3270
Mckenzie A Dunn54.2%8335
Ashley Hartman Gao53.8%7842
Fernando Nmn Ivich52.4%4238
Ellis Follett Lusi50.0%20
Bao Thuy L Nguyen50.0%20
Nam P Nguyen45.6%17142
Carmencita Belei37.7%1830
James Leslie Grun37.4%990
Michael Cameron Sveiven36.0%2519
Andrea S Grossman28.8%1770
Christine E Foster28.8%1530
Omar Ramadan25.4%6723
Ellen Jean Marcsisin23.9%920
Mark Lance Shibuya0.0%10
Jae W Lee0.0%10

Frequently Asked Questions

What is the allowance rate in USPTO Art Unit 1678?

43.0% over the last five years, across 2,319 resolved applications.

Which examiners in Art Unit 1678 have the highest allowance rates?

Among examiners with at least 30 resolved applications: Changhwa J Cheu (80.8%, 631 resolved), Gailene Gabel (80.7%, 513 resolved), Ann Y Montgomery (76.7%, 258 resolved).

Which examiners in Art Unit 1678 have the lowest allowance rates?

Among examiners with at least 30 resolved applications: Ellen Jean Marcsisin (23.9%, 92 resolved), Omar Ramadan (25.4%, 67 resolved), Christine E Foster (28.8%, 153 resolved).

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