Prosecution Insights
Last updated: October 02, 2026

Examiner: NGUYEN, CAM N

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

This examiner grants 85% of resolved cases

Analysis

Cam N. Nguyen is an examiner in Tech Center 4100 and Art Unit 1731. The data for this profile is based on 1293 resolved cases. The allowance rate is 84.8 percent, which serves as the baseline probability of success for applications in this portfolio. This rate provides a benchmark for practitioners to evaluate the likelihood of a grant when filing in this unit.

The median days to allowance is 911. This figure represents the time required for an application to reach a grant. Practitioners can use the 911-day timeline to manage client expectations regarding the duration of the prosecution process. This duration reflects the pace of work for the 1293 resolved cases concluded by the examiner.

The interview lift is 12.3 percent. This metric indicates the increase in the allowance rate when an interview is conducted. When compared to the 84.8 percent allowance rate, the 12.3 percent lift suggests that oral advocacy is a productive tool for resolving outstanding issues. For matters in Art Unit 1731, the data indicates that interviews are associated with a higher likelihood of moving a case toward allowance.

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
1,330
Total Applications
+12.3%
Interview Lift
911
Avg Prosecution Days
Based on 1294 resolved cases, 2023–2026

Rejection Statute Breakdown

0.9%
§101 Eligibility
30.2%
§102 Novelty
31.8%
§103 Obviousness
27.8%
§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
18492228 METHODS OF PREPARING ALUMINUM OXIDE Final Rejection Saudi Arabian Oil Company
18348527 ADSORBENT, METHOD FOR MANUFACTURING SAME, ADSORPTION SHEET, SEPARATION FILM, AND ARTIFICIAL DIALYSIS EQUIPMENT Final Rejection Murata Manufacturing Co., Ltd.
18380664 CONTINUOUS REACTION SYSTEM, FERROMANGANESE OXALATE PRECURSOR, LITHIUM IRON MANGANESE PHOSPHATE, PREPARATION METHOD, AND SECONDARY BATTERY Non-Final OA CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
18269032 ZIRCONIA GRANULE, GREEN COMPACT, AND METHODS OF PRODUCTION THEREOF Final Rejection Kuraray Noritake Dental Inc.
18553099 METHOD FOR PRODUCING LITHIUM COMPOUND AND APPARATUS FOR PRODUCING LITHIUM COMPOUND Non-Final OA IDEMITSU KOSAN CO.,LTD.
18270903 BOROPHANE POLYMORPHS AND SYNTHESIS METHODS OF SAME Final Rejection NORTHWESTERN UNIVERSITY
18259785 HYDROGENATION CATALYST WITH IMPROVED SULFUR RESISTANCE AND METHOD FOR PRODUCING SAME Final Rejection Hanwha Solutions Corporation
18517868 RU-BASED CATALYSTS FOR AMMONIA SYNTHESIS AT MILD CONDITIONS Non-Final OA Khalifa University of Science and Technology
18565326 Ultra-Pure Molybdenum Dichloride Dioxide, Packaged Forms Thereof And Methods Of Preparing The Same Non-Final OA VERSUM MATERIALS US, LLC
18555810 NON-SPHERICAL PRIMARY SILICA NANOPARTICLES AND THE USE THEREFOR Non-Final OA VERSUM MATERIALS US, LLC
18258600 ADSORBENT FILAMENTS AND METHODS OF FORMING THEREOF Non-Final OA SAINT-GOBAIN CERAMICS & PLASTICS, INC.
18562423 PROCESS FOR PRODUCING A SILICON COMPOSITE Non-Final OA WACKER CHEMIE AG
18257625 A PARTICULATE MAGNESIUM ION-COMPRISING MATERIAL FOR NOX UPTAKE Final Rejection Omya International AG
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
18324791 MIXED METAL OXIDE INCLUDING MAGNESIUM AND ZINC Final Rejection IMEC VZW

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