Prosecution Insights
Last updated: October 02, 2026

Examiner: PEREZ-GUZMAN, CARLOS GABRIEL

Tech Center 2800 • Art Units: 2877

This examiner grants 82% of resolved cases

Analysis

Carlos Gabriel Perez-Guzman operates in Art Unit 2877 of Tech Center 2800. The examiner has 155 resolved cases. The allowance rate for these cases is 81.9 percent. This high rate suggests a favorable environment for applicants. The examiner's history in this unit offers a clear view of typical prosecution outcomes.

The interview lift is 24.0 percent, which indicates that conducting an interview significantly increases the probability of allowance compared to the baseline rate of 81.9 percent. This is a highly recommended tactic for practitioners. For applications that reach allowance, the median time to allowance is 845 days. This pendency figure provides a timeline for the expected duration of prosecution.

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

Performance Statistics

81.9%
Allow Rate
+13.9% vs TC avg
172
Total Applications
+24.0%
Interview Lift
845
Avg Prosecution Days
Based on 155 resolved cases, 2023–2026

Rejection Statute Breakdown

4.8%
§101 Eligibility
18.8%
§102 Novelty
53.7%
§103 Obviousness
17.5%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18908626 LIGHT SOURCE MODULES FOR NOISE MITIGATION Non-Final OA Apple Inc.
18848909 OPTICAL DEVICE AND BIOSENSOR Final Rejection KYOCERA CORPORATION
19044689 DETECTING PROBLEMS WITH LASER SYSTEM SCANNERS Non-Final OA Alcon Inc.
19013895 RESONANT OPTICAL GYROSCOPE WITH INTEGRATED OPTICAL COMPONENTS AND A BROADBAND OPTICAL SOURCE Non-Final OA Honeywell International Inc.
19102286 Gas Measurement Device Non-Final OA SHIMADZU CORPORATION
18685416 MEASURING APPARATUS AND METHOD FOR MEASURING THE TEMPERATURE OF A MOLTEN METAL BATH WITH AN OPTICAL DEVICE Final Rejection Heraeus Electro-Nite International N.V.
19109520 SENSORS USING LIQUID METAL-BASED NANOPHOTONIC STRUCTURES Non-Final OA The Research Foundation for The State University of New York
18716007 TARGET ASYMMETRY MEASUREMENT FOR SUBSTRATE ALIGNMENT IN LITHOGRAPHY SYSTEMS Non-Final OA ASML Netherlands B.V.
19036605 METHODS OF DETERMINING OPTICAL PROPERTIES OF PARTICULATE MATERIALS USING A COMPOSITE SAMPLE AND RELATED SYSTEMS Non-Final OA The Government of the United States of America, as represented by the Secretary of the Navy
19106991 SCIENTIFIC INSTRUMENT SUPPORT SYSTEMS AND METHODS FOR MITIGATING SPECTRAL DRIFT Non-Final OA Thermo Fisher Scientific (Bremen) GmbH
18624444 PARALLEL SCANNING OVERLAY METROLOGY WITH OPTICAL META-SURFACES Non-Final OA KLA Corporation
18725694 IMAGING SYSTEMS AND RELATED SYSTEMS AND METHODS Final Rejection ILLUMINA, INC.
18952250 LIGHT SOURCE Non-Final OA NKT Photonics A/S
18788434 LIGHT SOURCE Final Rejection NKT PHOTONICS A/S

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