Prosecution Insights
Last updated: October 26, 2026

David J Parsley, USPTO Patent Examiner

Listed by the USPTO as PARSLEY, DAVID J

Tech Center 3700 • Art Units: 3643 3745

This examiner grants 54% of resolved cases

Analysis

PARSLEY, DAVID J is a USPTO patent examiner in tech center 3700 and art unit 3643, with 1,378 resolved cases. The recorded allowance rate is 54.1%, while the interview lift is 28.7%. The median time to allowance is 1,144 days, giving practitioners a substantial prosecution timeline to manage.

His listed company clients include Koninklijke Philips N.V., P Tech LLC, and Mayekawa Mfg. Co., Ltd. The listed firms are Workman Nydegger, Elliott Ostrander & Preston, P.C., and FITCH EVEN TABIN & FLANNERY, LLP. For applicants in this docket, interviews may be a meaningful prosecution tool, but claim strategy should account for the combination of a 54.1% allowance rate and 1,144-day median.

Written from this page's own data; every figure is computed from USPTO records and verified before publication.

Performance Statistics

54.1%
Allow Rate
-15.9% vs TC avg
1,443
Total Applications
+28.7%
Interview Lift
1144
Avg Prosecution Days
Based on 1378 resolved cases, 2023–2026

Rejection Statute Breakdown

0.7%
§101 Eligibility
17.3%
§102 Novelty
50.7%
§103 Obviousness
23.4%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
19577317 SAUSAGE FILLING MACHINE Non-Final OA INTRADIN (SHANGHAI) MACHINERY CO., LTD.
18711148 OPTIMAL PARAMETERS FOR SWEEPING AND POWER TAPPING MOTIONS Final Rejection KONINKLIJKE PHILIPS N.V.
18688764 MOUNT FOR AN ORAL APPLIANCE Final Rejection KONINKLIJKE PHILIPS N.V.
18929712 ADAPTER ASSEMBLY FOR A VEHICLE WIPER SYSTEM Non-Final OA VALEO SYSTEMES D'ESSUYAGE
19475553 WORK GRASPING APPARATUS AND WORK GRASPING METHOD Non-Final OA MAYEKAWA MFG. CO., LTD
18840534 MEAT PROCESSING APPARATUS AND MEAT PROCESSING SYSTEM Non-Final OA MAYEKAWA MFG. CO., LTD.
18918309 CONNECTOR FOR A PERSONAL CARE IMPLEMENT, HANDLE AND PERSONAL CARE IMPLEMENT Non-Final OA The Gillette Company LLC
19132109 FINGER HOLDER FOR A POULTRY PLUCKER Non-Final OA PLUMATECH

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Frequently Asked Questions

What is examiner David J Parsley's allowance rate?

54.1% of resolved applications examined by David J Parsley were allowed (1,378 resolved cases), compared with 30.1% across Art Unit 3643 over the last five years.

Does an interview help with examiner David J Parsley?

This examiner's interview lift is +28.7 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner David J Parsley take to allow a patent?

Applications allowed by David J Parsley took 1,144 days on average from filing to allowance.

Which art unit does examiner David J Parsley work in?

David J Parsley examines applications in Art Unit 3643 in Tech Center 3700 (Medical Devices & Mechanical Engineering).

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