Prosecution Insights
Last updated: October 26, 2026

Cody J Lieuwen, USPTO Patent Examiner

Listed by the USPTO as LIEUWEN, CODY J

Tech Center 3700 • Art Units: 3752

This examiner grants 60% of resolved cases

Analysis

LIEUWEN, CODY J is assigned to USPTO tech center 3700 and art unit 3752. The record includes 552 resolved cases, a 59.6% allowance rate, a 45.8% interview lift, and a median of 1066 days to allowance. The allowance rate and interview measure together indicate a profile where active examiner engagement may be particularly relevant to prosecution planning.

Tyco Fire Products L.P., 3M Innovative Properties Company, and Airbus SAS are the listed companies. Foley & Lardner LLP, Muncy, Geissler, Olds & Lowe, P.C., and Alumen IP Law PC are the leading firms. The varied industrial representation makes clear claim construction and technically specific interview preparation useful for applicants in this art unit.

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

Performance Statistics

59.6%
Allow Rate
-10.4% vs TC avg
605
Total Applications
+45.8%
Interview Lift
1066
Avg Prosecution Days
Based on 552 resolved cases, 2023–2026

Rejection Statute Breakdown

0.7%
§101 Eligibility
23.9%
§102 Novelty
42.2%
§103 Obviousness
28.9%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18427104 ADHESIVE SPRAY NOZZLE AND METHODS OF USING THE SAME Final Rejection 3M INNOVATIVE PROPERTIES COMPANY
18452192 DEVICE FOR CONTROLLING, AS A FUNCTION OF AT LEAST ONE PARAMETRIZED CRITERION, A SYSTEM FOR JETTISONING FLUID FOR A FIREFIGHTING HOST AIRCRAFT Non-Final OA Airbus SAS
18869137 CLEANING DEVICE Non-Final OA KOITO MANUFACTURING CO., LTD.
19110233 Aerosol Generating Device Comprising a Cover Non-Final OA JT International SA
18004392 ELECTRONIC DRY SPRINKLER ASSEMBLY Non-Final OA Tyco Fire Products LP
17771774 CARTRIDGE MONITORING SYSTEM AND COUPLER Non-Final OA Tyco Fire Products LP
18571490 APPARATUS AND METHOD FOR PRODUCING DROPLETS OF TARGET MATERIAL IN AN EUV SOURCE Final Rejection ASML Netherlands B.V.

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Frequently Asked Questions

What is examiner Cody J Lieuwen's allowance rate?

59.6% of resolved applications examined by Cody J Lieuwen were allowed (552 resolved cases), compared with 48.7% across Art Unit 3752 over the last five years.

Does an interview help with examiner Cody J Lieuwen?

This examiner's interview lift is +45.8 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Cody J Lieuwen take to allow a patent?

Applications allowed by Cody J Lieuwen took 1,066 days on average from filing to allowance.

Which art unit does examiner Cody J Lieuwen work in?

Cody J Lieuwen examines applications in Art Unit 3752 in Tech Center 3700 (Medical Devices & Mechanical Engineering).

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