Prosecution Insights
Last updated: October 08, 2026

USPTO Art Unit 3646: Examiners and Allowance Rates

47 examiners • 11 with pending office actions • Transportation, E-Commerce & Mechanical Systems (Tech Center 3600)

Art unit baseline (last 5 years, 3,613 dispositions): 54% allowance rate • 2.0 office actions per allowance • 917 days median pendency
ExaminerAllowance rateResolved casesPending apps
Fredrick Z Michael100.0%20
Mirellys Jagan100.0%10
Michael C Mccullough100.0%10
Michael W Justice100.0%10
Jesse Samuel Bogue100.0%10
Olumide Ajibade Akonai100.0%10
Jacob F Betit100.0%10
Rachel Alice Richardson100.0%10
Qutbuddin Ghulamali100.0%10
Erin Barry Saad100.0%10
Marc Anthony Armand95.7%690
Harry K Liu92.8%1810
Dao Linda Phan92.3%2080
Bo Fan91.3%4970
Whitney Moore90.3%58525
Bernarr E Gregory89.7%2530
Timothy A Brainard89.3%2240
Ricardo J Palabrica88.9%540
John B Sotomayor88.6%2190
Darlene M Ritchie88.2%760
Chuong P Nguyen85.5%82125
Peter M Bythrow83.6%1340
Daniel D Wasil79.8%67424
Marcus E Windrich77.0%72728
Marshall P O'Connor76.9%4200
Frank J Mcgue75.4%5480
Matthew M Barker72.7%65212
Fred H Mull69.1%970
Lily Crabtree Garner68.2%58437
Sharon M Davis66.9%53131
Clayton Paul Ridder64.7%3436
Nga X Nguyen64.1%390
Sean P Burke63.9%2910
Joshua Craig Devorkin63.6%550
John T Nolan61.0%590
Cassi J Galt60.2%2840
John Bishoy Sam Abraham58.3%125
Gregory C Issing51.6%5520
Erin Marie Boyd Leach48.6%350
Jinney Kil46.9%19629
Kimberly E Coghill44.4%90
Julia D Prendergast36.8%190
Sandra L Herrick22.2%360
Jack W Keith13.4%1120
Docket Tc 36000.0%10
Kate R Duffy0.0%10
Kelly Marie Cooperrider—07

Frequently Asked Questions

What is the allowance rate in USPTO Art Unit 3646?

54.3% over the last five years, across 3,613 resolved applications.

Which examiners in Art Unit 3646 have the highest allowance rates?

Among examiners with at least 30 resolved applications: Marc Anthony Armand (95.7%, 69 resolved), Harry K Liu (92.8%, 181 resolved), Dao Linda Phan (92.3%, 208 resolved).

Which examiners in Art Unit 3646 have the lowest allowance rates?

Among examiners with at least 30 resolved applications: Jack W Keith (13.4%, 112 resolved), Sandra L Herrick (22.2%, 36 resolved), Jinney Kil (46.9%, 196 resolved).

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