Prosecution Insights
Last updated: May 29, 2026

Examiner: ESPERON, NATHAN GREGORY

Tech Center 1700 • Art Units: 1657 1799

This examiner grants 41% of resolved cases

Performance Statistics

41.2%
Allow Rate
-23.8% vs TC avg
146
Total Applications
+25.4%
Interview Lift
1412
Avg Prosecution Days
Based on 114 resolved cases, 2023–2026

Rejection Statute Breakdown

1.5%
§101 Eligibility
1.5%
§102 Novelty
79.3%
§103 Obviousness
6.8%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
17558243 APPARATUSES AND SYSTEMS FOR PREPARING A MEAT PRODUCT Non-Final OA Upside Foods, Inc.
17442709 GREENHOUSE GAS IMPROVED FERMENTATION Non-Final OA DSM IP ASSETS B.V.
18184800 SYSTEM AND METHOD FOR TISSUE MAINTENANCE, ASSESSMENT, MATURATION, AND REHABILITATION Final Rejection DEKA Products Limited Partnership
17911559 MICROFLUIDIC CHIP CELL SORTING AND TRANSFECTION Non-Final OA HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
17911553 REAGENT INJECTIONS INTO CELLS Non-Final OA HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
17287349 MULTIPLEXED SINGLE-CELL ANALYSIS USING OPTICALLY-ENCODED RNA CAPTURE PARTICLES Final Rejection THE GENERAL HOSPITAL CORPORATION
17955738 CELL SEPARATION PARTICLES FOR AND/NOT OPERATIONS OR MULTIPLE TARGETS Final Rejection The Charles Stark Draper Laboratory, Inc.
16379133 SENSOR RECEPTACLE FOR A BIOREACTOR, AND BIOREACTOR WITH SENSOR RECEPTACLE, AND METHOD FOR PROPAGATION OR CULTIVATION OF BIOLOGICAL MATERIAL Non-Final OA SCHOTT AG
17307880 MICROCOSM BIO-SCAFFOLD AND APPLICATIONS THEREOF Final Rejection 3D SYSTEMS, INC.
17712989 Additive Manufacturing of a Packed Bed Bioreactor Final Rejection The Government of the United States of America, as represented by the Secretary of the Navy
16229272 SENSOR FOR CHEMICAL ANALYSIS AND METHODS FOR MANUFACTURING THE SAME Final Rejection Life Technologies Corporation
17983414 COMBINED ALGAE PRODUCTION SYSTEM AND APPLICATION SYSTEM Non-Final OA SUN YAT-SEN UNIVERSITY
18454368 METHODS AND SYSTEMS FOR PROPAGATING MICROORGANISMS FOR MITIGATING MYCOTOXIN CONTAMINATION, AND RELATED SYSTEMS AND METHODS Non-Final OA POET Research, Inc.
17797857 NON-CONTACT DEVICE FOR TREATING CELLS Non-Final OA Bühler AG
18020527 BIOPROCESSING SYSTEM AND APPARATUS FOR REDUCING CELL SHEAR IN A BIOPROCESSING SYSTEM Non-Final OA GLOBAL LIFE SCIENCES SOLUTIONS USA LLC
17292288 Bioreactor with Filter Non-Final OA Global Life Sciences Solutions USA LLC
18093708 PHOTO-BIOREACTOR DEVICE AND METHODS Non-Final OA ARBOREA LTD
17913933 BODY TISSUE MONITOR, BODY TISSUE PRESERVATION SYSTEM AND CORRESPONDING METHOD Final Rejection UNIVERSITY OF NEWCASTLE UPON TYNE
17798960 APPARATUS AND METHOD Non-Final OA UNIVERSITY OF NEWCASTLE UPON TYNE
17986060 SYSTEM AND METHOD FOR ORGANOID CULTURE Final Rejection Molecular Devices (Austria) GmbH
17789707 MAGNETOELASTIC MICROCARRIERS AND MONITORING SYSTEM Final Rejection Salil S. Karipott
17766766 DRUM COMPOSTER, COMPOSTING DRUM USED IN THIS AND COMPOSTING METHOD Final Rejection PROFIKOMP KÖRNYEZETTECHNIKA ZRT.
17430820 CULTURE SUBSTRATE FOR METHANISATION METHOD Non-Final OA BioRenGaz
17418758 POROUS MICROWELL, AND MEMBRANE COMPRISING SAME AND MANUFACTURING METHOD THEREFOR Final Rejection Celloid Co., Ltd.

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