Prosecution Insights
Last updated: October 25, 2026

USPTO Art Unit 1791: Examiners and Allowance Rates

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

Art unit baseline (last 5 years, 4,602 dispositions): 26% allowance rate
ExaminerAllowance rateResolved casesPending apps
Linda Lamey Gray100.0%60
Karl Kurple100.0%10
Elizabeth M Kerr100.0%10
David A Simmons100.0%10
Joseph W Drodge100.0%10
Mary Lynn F Theisen78.4%740
John Eric Hug78.3%1750
Jyoti Chawla77.0%25628
Adrienne C Johnstone75.0%760
Mark Halpern72.8%1840
Brian R Slawski71.2%730
Melvin C Mayes70.0%100
Timothy W Heitbrink68.5%1430
Carolyn A Paden68.0%1940
Thukhanh T Nguyen67.3%1040
James P Mackey67.2%1370
Jose A Fortuna67.1%1400
Robert B Davis63.5%1560
Emmanuel S Luk63.0%1460
Sing P Chan62.8%1210
Maria Veronica Ewald62.7%1660
James D Sells61.5%1560
Carlos N Lopez60.3%1260
Edmund H Lee60.2%1710
Leo B Tentoni58.7%1380
Matthew Hoover57.6%590
Joseph S Leyson57.6%990
Jill Lynne Heitbrink56.4%1170
Vishal I Patel56.1%410
Monica Anne Huson56.1%1980
George R Koch56.0%1500
Carson Gross55.8%430
Jeffry H Aftergut54.4%1360
Jenna A Watts54.2%58316
Steven D Maki53.8%1600
Robert C Dye53.8%800
Scott Dodds53.2%470
Sonya Mazumdar Sengupta52.9%1040
David N Brown II52.8%530
Mark A Osele52.7%1100
Hamid R Badr52.7%7190
Russell J Kemmerle III51.8%1100
Timothy J Kennedy51.2%860
Omar F Siddique50.0%40
Joshel Rivera48.4%310
Daniel H. Lee47.8%460
John A Blades47.4%380
Geoffrey L Knable46.8%1090
Jodi Cohen Franklin46.7%150
Justin R Fischer46.2%1990
Queenie S Dehghan46.1%890
Jaeyun Lee46.0%500
Saeed M Huda45.3%950
Alison L Hindenlang42.9%490
Nahida Sultana42.7%750
Michael N Orlando42.6%1220
Robert J Grun41.7%840
Matthew J Daniels41.7%240
Seyed Masoud Malekzadeh41.5%1180
James M Sanders41.4%700
Suzanne E Mcdowell41.4%290
Jeffrey Michael Wollschlager41.3%1430
Keith T Aziz41.0%390
Dennis R Cordray40.8%1470
Erin Lynn Snelting40.7%590
Michael J Felton40.4%890
Chaim A Smith40.1%18730
Christopher C Caillouet40.0%700
Xue H Liu40.0%550
Vera Stulii39.8%70433
Nickolas R Harm39.3%280
Dimple D Sopariwala38.5%1430
Barbara J Musser38.3%940
Galen H Hauth38.3%1150
John P Robitaille38.2%340
Lorraine Rios38.1%210
Katherine Deguire Leblanc38.0%54031
Alex B Efta36.7%490
Changqing Li36.1%8356
Margaret Brodie36.0%250
Jacob T Minskey36.0%890
John L Goff II35.9%1170
Cynthia Szewczyk35.1%970
Mathieu D Vargot33.6%1520
Magali P Slawski33.3%360
Elizabeth A Gwartney33.2%3670
Stephanie A Kohler33.0%53435
Phu Hoang Nguyen32.9%700
Ryan M Ochylski31.9%690
Christopher T Schatz30.6%720
Daniel Mcnally29.9%1070
Anthony J Calandra29.0%1000
Jeffrey D Benson29.0%690
Andrew E Merriam28.3%14552
Chhaya D Sayala27.8%3240
Jeremiah R Smith27.8%360
Philip A Dubois27.0%49742
Michael A Tolin26.9%1080
Stephen J Sollenberger26.7%300
Nikki H Dees26.6%47311
John M Hoffmann25.0%920
Benjamin A Schiffman25.0%520
Ninh V Le25.0%400
Jason L Lazorcik24.4%780
Amber Rose Orlando24.3%370
Patrick Neal Butler23.9%460
Tamra Dicus23.5%3440
Elizabeth Bradford23.3%300
Michele Lynn Jacobson19.1%470
Kelly P Kershaw17.7%22054
Kimberly Keil Mcclelland17.6%740
Amjad A Abraham17.2%640
Stephanie Rae Gerla16.7%4830
Vicki H Wu16.7%300
Yana Belyaev16.7%240
Jerry W Anderson16.5%1150
Michael T Piery15.5%840
Stella Kim Yi15.5%840
Kelly Jo Bekker15.1%3570
Atul P Khare14.7%340
William P Bell13.9%720
Larry W Thrower11.5%780
Martin K Rogers9.8%610
Juliya Kravets9.1%330
Deborah Yang-Hao Liu8.9%4537
Maura Elizabeth Sweeney7.0%5721
Christina Ann Johnson6.7%150
Joseph Cullen Merchlinsky5.9%1733
Donald Lawrence Tarazano0.0%420
Joseph Steven Del Sole0.0%190
Elizabeth Arnade0.0%110
Ian Mullican0.0%50
Liseda Felau0.0%50
Roshanak Aryan-Nejad0.0%20
Khushal R Dharod0.0%20
Christopher S Nichols0.0%20
Felicia C Turner0.0%10
Steven P Griffin0.0%10

Frequently Asked Questions

What is the allowance rate in USPTO Art Unit 1791?

26.2% over the last five years, across 4,602 resolved applications.

Which examiners in Art Unit 1791 have the highest allowance rates?

Among examiners with at least 30 resolved applications: Mary Lynn F Theisen (78.4%, 74 resolved), John Eric Hug (78.3%, 175 resolved), Jyoti Chawla (77.0%, 256 resolved).

Which examiners in Art Unit 1791 have the lowest allowance rates?

Among examiners with at least 30 resolved applications: Donald Lawrence Tarazano (0.0%, 42 resolved), Maura Elizabeth Sweeney (7.0%, 57 resolved), Deborah Yang-Hao Liu (8.9%, 45 resolved).

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