Prosecution Insights
Last updated: October 25, 2026

USPTO Art Unit 2418: Examiners and Allowance Rates

16 examiners • 10 with pending office actions • Networking & Security (Tech Center 2400)

Art unit baseline (last 5 years, 285 dispositions): 90% allowance rate • 6.8 office actions per allowance • 1,393 days median pendency
ExaminerAllowance rateResolved casesPending apps
Michael A Keller100.0%1033
Chhian Ling100.0%415
David Zhijun Sun100.0%315
Rafael Perez Gutierrez100.0%10
Christine Duong Fuqua100.0%10
Yewon Kim100.0%10
Thao Duc Duong100.0%10
Dady Chery99.4%16026
Wutchung Chu97.2%14431
Berhanu D Belete94.5%10911
Moo Ryong Jeong73.3%157
Benjamin Alexander Pezzlo66.7%30
Theresa Nguyen60.0%522
Garth Daniel Richmond50.0%20
Scott A Schlack50.0%218
Ki Seok Kim—023

Frequently Asked Questions

What is the allowance rate in USPTO Art Unit 2418?

89.8% over the last five years, across 285 resolved applications.

Which examiners in Art Unit 2418 have the highest allowance rates?

Among examiners with at least 30 resolved applications: Dady Chery (99.4%, 160 resolved), Wutchung Chu (97.2%, 144 resolved), Berhanu D Belete (94.5%, 109 resolved).

Which examiners in Art Unit 2418 have the lowest allowance rates?

Among examiners with at least 30 resolved applications: Berhanu D Belete (94.5%, 109 resolved), Wutchung Chu (97.2%, 144 resolved), Dady Chery (99.4%, 160 resolved).

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