Prosecution Insights
Last updated: October 25, 2026

USPTO Art Unit 1783: Examiners and Allowance Rates

46 examiners • 15 with pending office actions • Chemistry & Materials (Tech Center 1700)

Art unit baseline (last 5 years, 5,087 dispositions): 41% allowance rate • 5.4 office actions per allowance • 1,558 days median pendency
ExaminerAllowance rateResolved casesPending apps
Heidi Riviere Kelley100.0%20
Jason L Vaughan100.0%10
Hai Y Zhang100.0%10
Laura B Figg100.0%10
Andrew D Graham100.0%10
Kevin Michael Knowlan100.0%118
Lawrence D Ferguson76.2%1300
Brent T O Hern75.0%280
Alexander S Thomas70.4%1,0290
Zachary M Davis70.1%3719
Donald J Loney70.0%6810
Catherine A Simone66.7%1380
Prashant J Khatri65.4%82031
Megha Mehta Gaitonde61.9%420
Brent T O'Hern61.7%1880
Travis M Figg61.5%42623
Suhani Jitendra Patel61.1%1830
William P Watkins III60.4%7420
Nicole T Gugliotta59.1%880
Daniel H Miller55.9%6190
Patricia L Nordmeyer55.3%470
Sow Fun Hon55.2%290
Joanna Pleszczynska54.5%69328
Nathan L Van Sell54.4%88639
Brian Handville51.2%55535
Laura A Auer49.8%48624
Victor S Chang48.7%390
Ethan A Utt48.1%38524
Ethan Weydemeyer44.2%38237
Tahseen Khan41.3%460
Maria Veronica Ewald41.3%469
Alicia Ann Chevalier39.0%410
Nancy Rosenberg Johnson37.7%4480
Jeffrey A Vonch33.9%620
Kendra J Keith30.0%300
Walter A Moore26.3%190
Daniel P Dillon26.3%27033
Michael B Nelson25.0%80
Tong Guo20.5%2190
Nathan Comstock14.3%70
David R Sample0.0%290
Sean W Collins0.0%10
Jennifer A Steele0.0%10
Monica Anne Huson0.0%10
Jordan Patrick Wilkerson—028
Kelvin Mitchell Frazier—018

Frequently Asked Questions

What is the allowance rate in USPTO Art Unit 1783?

41.4% over the last five years, across 5,087 resolved applications.

Which examiners in Art Unit 1783 have the highest allowance rates?

Among examiners with at least 30 resolved applications: Lawrence D Ferguson (76.2%, 130 resolved), Alexander S Thomas (70.4%, 1,029 resolved), Zachary M Davis (70.1%, 371 resolved).

Which examiners in Art Unit 1783 have the lowest allowance rates?

Among examiners with at least 30 resolved applications: Tong Guo (20.5%, 219 resolved), Daniel P Dillon (26.3%, 270 resolved), Kendra J Keith (30.0%, 30 resolved).

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