Prosecution Insights
Last updated: October 25, 2026

USPTO Art Unit 1621: Examiners and Allowance Rates

72 examiners • 19 with pending office actions • Biotechnology & Pharmaceuticals (Tech Center 1600)

Art unit baseline (last 5 years, 4,572 dispositions): 46% allowance rate • 3.1 office actions per allowance • 870 days median pendency
ExaminerAllowance rateResolved casesPending apps
John William Lippert100.0%10
William A Craigo100.0%10
Paul Joseph Arcoria100.0%126
David M. Shim100.0%10
Sun Jae Yoo89.0%30151
Daniel R Carcanague87.1%2172
Charanjit Aulakh86.7%65643
Kofi Adzamli86.7%150
Janet L Coppins86.1%790
Valerie Rodriguez-Garcia85.4%18529
Golam M Shameem85.2%22317
Yong Liang Chu85.2%1080
Jafar F Parsa83.2%3930
Brian J Davis83.0%4530
Sikarl A Witherspoon81.1%5880
David K O Dell80.6%38642
Porfirio Nazario Gonzalez80.5%3340
Pancham Bakshi80.3%660
Po-Chih Chen78.6%29937
Deborah D Carr76.4%2760
Chukwuma O Nwaonicha75.3%2350
Elvis O Price74.9%1830
Patrick T Lewis73.8%650
Niloofar Rahmani71.9%1140
George W Kosturko69.4%26522
Paul A Zucker69.4%4380
Savitha M Rao68.0%4030
Karl J Puttlitz67.2%5450
Sudhakar Katakam66.7%4770
Wu Cheng Winston Shen66.7%120
Medhanit W Bahta66.7%30
Yevgeny Valenrod66.3%4190
Izabela Maria Schmidt65.7%10223
Yih-Horng Shiao65.4%260
Everett White65.2%460
Yate Kai Rene Cutliff65.2%2440
Kendall Nicole Heitmeier65.1%4332
Peter G O Sullivan65.1%1660
Shailendra Kumar64.5%4220
Samuel A Barts64.3%140
Karen Cheng63.5%630
San Ming R Hui63.2%4480
Kyle Gregory Nottingham61.4%11433
Jerica Katlynn Wilson61.0%11828
Nicola Maria Bauer58.7%6327
Jennifer C Sawyer57.9%1210
Ana Z Muresan57.1%140
Blaine G Doletski57.1%70
Josmalen Milagros Ramos Lewis55.1%6915
Gregg Polansky52.4%2860
Marialouisa Lao50.0%40
Angela C Brown-Pettigrew48.5%2680
Clinton A Brooks47.9%2674
Zohreh Alemzadeh Fay47.3%3490
Andrew P Lee46.5%3010
Kathrien Ann Hartsfield45.3%3840
Y Jeanmarie Z Calvillo44.1%930
Sonya N Wright42.5%400
Johann R Richter42.2%450
Rosalynd Ann Keys41.3%2250
Taina Del Mar Matos Negron41.0%2290
Bong-Sook Baek41.0%2660
Gigi Georgiana Huang39.8%1710
Sabiha Naim Qazi37.0%3270
Kellette Gale36.4%110
Seong Jong Kim33.3%340
Timothy E Betton30.8%130
Daniel M Sullivan30.4%230
Melenie Lee Gordon8.3%120
Mark R Luderer0.0%20
Bradley Scott Mayhew0.0%113
Cindy Liliana Bagnal—02

Frequently Asked Questions

What is the allowance rate in USPTO Art Unit 1621?

46.0% over the last five years, across 4,572 resolved applications.

Which examiners in Art Unit 1621 have the highest allowance rates?

Among examiners with at least 30 resolved applications: Sun Jae Yoo (89.0%, 301 resolved), Daniel R Carcanague (87.1%, 217 resolved), Charanjit Aulakh (86.7%, 656 resolved).

Which examiners in Art Unit 1621 have the lowest allowance rates?

Among examiners with at least 30 resolved applications: Sabiha Naim Qazi (37.0%, 327 resolved), Gigi Georgiana Huang (39.8%, 171 resolved), Bong-Sook Baek (41.0%, 266 resolved).

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