Prosecution Insights
Last updated: August 18, 2026

Examiner: XU, XIAOYUN

Tech Center 1700 • Art Units: 1758 1777 1797

This examiner grants 60% of resolved cases

Performance Statistics

59.9%
Allow Rate
-5.1% vs TC avg
1,218
Total Applications
+31.9%
Interview Lift
1183
Avg Prosecution Days
Based on 1169 resolved cases, 2023–2026

Rejection Statute Breakdown

1.1%
§101 Eligibility
15.8%
§102 Novelty
64.9%
§103 Obviousness
13.7%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18449082 INFORMATION PROCESSING APPARATUS AND MICROSCOPE SYSTEM Non-Final OA Sony Group Corporation
18495188 METHOD FOR ASSESSING QUALITY OF AMINE-BASED SHALE INHIBITORS Final Rejection SAUDI ARABIAN OIL COMPANY
18698764 CELL ISOLATION AND REAGENT EXCHANGE IN A MICROFLUIDIC DEVICE Non-Final OA MAYO FOUNDATION FOR MEDICAL EDUCATION AND RESEARCH
17930471 HIGH-THROUGHPUT AND MASS-SPECTROMETRY-BASED METHOD FOR QUANTITATING ANTIBODIES AND OTHER Fc-CONTAINING PROTEINS Non-Final OA Regeneron Pharmaceuticals, Inc.
17870368 NATIVE MICROFLUIDIC CE-MS ANALYSIS OF ANTIBODY CHARGE HETEROGENEITY Final Rejection Regeneron Pharmaceuticals, Inc.
17684674 SYSTEMS AND METHODS FOR QUANTIFYING AND MODIFYING PROTEIN VISCOSITY Non-Final OA Regeneron Pharmaceuticals, Inc.
18517981 SAMPLE ANALYSIS DEVICE, SAMPLE ANALYSIS METHOD, PHARMACEUTICAL ANALYSIS DEVICE AND PHARMACEUTICAL ANALYSIS METHOD Final Rejection SHIMADZU CORPORATION
18547687 METHODS FOR POLYPEPTIDE PROCESSING AND ANALYSIS Non-Final OA BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM
18145602 METHODS FOR THE DETECTION AND TREATMENT OF PROSTATE CANCER Non-Final OA Board of Regents, The University of Texas System
18641606 MEASUREMENT UNIT, METHOD FOR MANUFACTURING MEASUREMENT UNIT, AND BIOLOGICAL SAMPLE MEASUREMENT METHOD Non-Final OA HAMAMATSU PHOTONICS K.K.
18639834 INSTRUMENT FOR AUTOMATICALLY DISSECTING A BIOLOGICAL SPECIMEN ON A SLIDE Non-Final OA Roche Molecular Systems, Inc.
18156846 LIGHT ENERGY FLUORESCENCE EXCITATION Final Rejection Illumina, Inc.
18566478 NOVEL METHOD FOR MEASURING CHOLESTEROL EFFLUX CAPACITY Non-Final OA NATIONAL UNIVERSITY CORPORATION TOKYO MEDICAL AND DENTAL UNIVERSITY
18312442 DERIVATIZATION OF AT LEAST ONE ANALYTE OF INTEREST FOR MASS SPEC MEASUREMENTS IN PATIENT SAMPLES Non-Final OA Roche Diagnostics Operations, Inc.
18451614 NONIONIC, REDOX-CLEAVABLE SURFACTANT FOR MASS SPECTROMETRY-BASED PROTEOMICS AND STRUCTURAL BIOLOGICAL APPLICATIONS Non-Final OA Wisconsin Alumni Research Foundation
18053093 VIRUS PEPTIDE AND PROTEIN VARIANT SELECTION WORKFLOW Final Rejection Waters Technologies Corporation
18008983 EYE DISEASE EVALUATION METHOD Final Rejection KYOTO PREFECTURAL PUBLIC UNIVERSITY CORPORATION
18532621 SYSTEMS, DEVICES, AND METHODS FOR CELL PROCESSING Non-Final OA Cellares Corporation
18576158 PCR MODULE Final Rejection OPTOLANE TECHNOLOGIES INC.

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