Prosecution Insights
Last updated: October 10, 2026

David J Walczak, USPTO Patent Examiner

Listed by the USPTO as WALCZAK, DAVID J

Tech Center 3700 • Art Units: 3751 3754 3761 3772 3781

This examiner grants 74% of resolved cases

Performance Statistics

74.1%
Allow Rate
+4.1% vs TC avg
1,783
Total Applications
+17.7%
Interview Lift
873
Avg Prosecution Days
Based on 1768 resolved cases, 2023–2026

Rejection Statute Breakdown

0.9%
§101 Eligibility
25.9%
§102 Novelty
36.1%
§103 Obviousness
32.2%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18872332 LIQUID DISPENSER WITH CONTROLLED DISPENSING Non-Final OA Solventum Intellectual Properties Company
19182768 ACTUATOR NOZZLE FOR AEROSOL PACKAGING, AND METHODS OF MAKING AND USING SUCH ACTUATOR NOZZLES AND AEROSOL PACKAGINGS Non-Final OA SOCIETE DES PRODUITS NESTLE S.A.
18996784 ACTUATING PART FOR A STORAGE SUBASSEMBLY OF A FLUID PRODUCT DISPENSER, ASSOCIATED SUBASSEMBLY AND DISPENSER Non-Final OA ALBEA SERVICES
19169662 MOTORIZED TOILET SEAT Non-Final OA Kohler Co.

Facing This Examiner?

IP Author analyzes examiner patterns and generates tailored response strategies with the highest chance of allowance.

Build Your Strategy

Who Appears Before This Examiner

Top companies before this examiner

Law firms appearing most often

Frequently Asked Questions

What is examiner David J Walczak's allowance rate?

74.1% of resolved applications examined by David J Walczak were allowed (1,768 resolved cases), compared with 0.0% across Art Unit 3751 over the last five years.

Does an interview help with examiner David J Walczak?

This examiner's interview lift is +17.7 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 Walczak take to allow a patent?

Applications allowed by David J Walczak took 873 days on average from filing to allowance.

Which art unit does examiner David J Walczak work in?

David J Walczak examines applications in Art Unit 3751 in Tech Center 3700 (Medical Devices & Mechanical Engineering).

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month