Prosecution Insights
Last updated: October 27, 2026

Cam N Nguyen, USPTO Patent Examiner

Listed by the USPTO as NGUYEN, CAM N

Tech Center 4100 • Art Units: 1731 1736 1763 1793 4100

This examiner grants 85% of resolved cases

Analysis

NGUYEN, CAM N works in Technology Center 4100 and Art Unit 1731. Across 1298 resolved cases, the allowance rate is 84.8%, indicating a favorable record with substantial activity. The median time to allowance is 912 days, which should be incorporated into portfolio forecasts even where the allowance result is strong. Applicants can use this profile to calibrate expectations for both outcome and timing.

The interview lift is 12.3%, supporting interviews as a potentially useful part of prosecution when written arguments alone may not efficiently resolve an issue. Practitioners should still connect any interview to clear amendments or a defined explanation of the claimed invention. The leading companies are Versum Materials US LLC, NEC Corporation, and Kabushiki Kaisha Toshiba. Leading firms are THE WEBB LAW FIRM, P.C., ARENTFOX SCHIFF LLP - New York, and Barnes & Thornburg LLP (IN).

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

Performance Statistics

84.8%
Allow Rate
+24.8% vs TC avg
1,334
Total Applications
+12.3%
Interview Lift
912
Avg Prosecution Days
Based on 1298 resolved cases, 2023–2026

Rejection Statute Breakdown

0.9%
§101 Eligibility
30.5%
§102 Novelty
31.7%
§103 Obviousness
27.5%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18385709 CERAMIC SINTERED BODY, INFRARED STEALTH MATERIAL, AND METHOD FOR MANUFACTURING CERAMIC SINTERED BODY Non-Final OA NEC Corporation
18519410 CARBON DIOXIDE ADSORBENT AND CARBON DIOXIDE ADSORPTION-DESORPTION DEVICE Non-Final OA KABUSHIKI KAISHA TOSHIBA
18906547 HIGHLY ACTIVE AND HIGHLY SELECTIVE COPPER EXTRUDATE CATALYSTS Non-Final OA BASF CORPORATION
18348527 ADSORBENT, METHOD FOR MANUFACTURING SAME, ADSORPTION SHEET, SEPARATION FILM, AND ARTIFICIAL DIALYSIS EQUIPMENT Final Rejection Murata Manufacturing Co., Ltd.
18269032 ZIRCONIA GRANULE, GREEN COMPACT, AND METHODS OF PRODUCTION THEREOF Final Rejection Kuraray Noritake Dental Inc.
18270903 BOROPHANE POLYMORPHS AND SYNTHESIS METHODS OF SAME Final Rejection NORTHWESTERN UNIVERSITY
18258600 ADSORBENT FILAMENTS AND METHODS OF FORMING THEREOF Non-Final OA SAINT-GOBAIN CERAMICS & PLASTICS, INC.
18517868 RU-BASED CATALYSTS FOR AMMONIA SYNTHESIS AT MILD CONDITIONS Non-Final OA Khalifa University of Science and Technology
18237321 LITHIUM METAL HALIDE-BASED SOLID ELECTROLYTE FOR ALL-SOLID-STATE BATTERY HAVING NEW CRYSTAL STRUCTURE Final Rejection Industry-University Cooperation Foundation Hanyang University ERICA Campus
18218117 COBALTOSIC OXIDE-LOADED TITANIUM DIOXIDE HETEROJUNCTION NANOZYME AND PREPARATION METHOD THEREFOR AND APPLICATION THEREOF Final Rejection Shanghai Sixth People's Hospital
18540180 ELECTROCHEMICAL REGENERATION METHOD OF ACTIVATED CARBON Non-Final OA Chongqing University

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 Cam N Nguyen's allowance rate?

84.8% of resolved applications examined by Cam N Nguyen were allowed (1,298 resolved cases), compared with 55.4% across Art Unit 1731 over the last five years.

Does an interview help with examiner Cam N Nguyen?

This examiner's interview lift is +12.3 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Cam N Nguyen take to allow a patent?

Applications allowed by Cam N Nguyen took 912 days on average from filing to allowance.

Which art unit does examiner Cam N Nguyen work in?

Cam N Nguyen examines applications in Art Unit 1731 in Tech Center 4100.

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