Prosecution Insights
Last updated: April 19, 2026

Examiner: CHEU, CHANGHWA J

Tech Center 1600 • Art Units: 1641 1645 1677 1678

This examiner grants 75% of resolved cases

Performance Statistics

74.6%
Allow Rate
+14.6% vs TC avg
1209
Total Applications
+47.6%
Interview Lift
1043
Avg Prosecution Days
Based on 1194 resolved cases, 2023–2026

Rejection Statute Breakdown

9.4%
§101 Eligibility
18.8%
§102 Novelty
29.3%
§103 Obviousness
26.2%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18336644 FAST PROTEIN SEQUENCING Non-Final OA Regeneron Pharmaceuticals, Inc.
18512453 METHODS AND SYSTEMS FOR DETECTING PEPTIDE AGGREGATES Non-Final OA Rensselaer Polytechnic Institute
18669809 LIPIDOMIC BIOMARKERS FOR ATHEROSCLEROSIS AND CARDIOVASCULAR DISEASE Final Rejection ZORA BIOSCIENCES OY
17779900 METHODS AND KITS FOR DETECTING AUTOIMMUNE DISEASES Final Rejection MESO SCALE TECHNOLOGIES, LLC.
18041141 NANOPARTICLE-ENABLED ANALYSIS OF CELL-FREE NUCLEIC ACID IN COMPLEX BIOLOGICAL FLUIDS Non-Final OA THE UNIVERSITY OF MANCHESTER
18500793 GLOBAL PROTEOMIC SCREENING OF RANDOM BEAD ARRAYS USING MASS SPECTROMETRY IMAGING Non-Final OA AmberGen, Inc.
18040422 EX VIVO COLONIC BIOPSY PLATFORM TO EVALUATE MULTI-OMIC SIGNATURES FOR SCREENING CANDIDATE THERAPEUTICS Non-Final OA Athos Therapeutics, Inc.
18466187 COMPOSITIONS, DEVICES, AND METHODS OF IBS SENSITIVITY TESTING Non-Final OA Biomerica, Inc.
18548043 METHODS FOR THE MEASUREMENT OF PROTEIN C AND ACTIVATED PROTEIN C Non-Final OA INSTITUTO DE INVESTIGACIÓN SANITARIA INCLIVA
18009429 SUPERABSORBENT POLYMER FOR CLASSIFICATION OF PARTICLES AND CLASSIFICATION METHOD USING THE SAME Final Rejection Egret Lab, LTD.
17927187 METHOD FOR EVALUATING ALLERGEN INACTIVATORS AND KIT FOR EVALUATING ALLERGEN INACTIVATORS Non-Final OA ITEA INC.

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