Prosecution Insights
Last updated: May 29, 2026

Examiner: SPIES, BRADLEY R

Tech Center 1700 • Art Units: 1772 1777

This examiner grants 74% of resolved cases

Performance Statistics

73.8%
Allow Rate
+8.8% vs TC avg
847
Total Applications
+20.9%
Interview Lift
871
Avg Prosecution Days
Based on 822 resolved cases, 2023–2026

Rejection Statute Breakdown

0.2%
§101 Eligibility
1.3%
§102 Novelty
82.9%
§103 Obviousness
2.7%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18472298 POLYPYRROLE-GRAPHITIC CARBON NITRIDE (PPY-G-C3N4) DECORATED POLYMERIC/CERAMIC COMPOSITE FILTRATION MEMBRANE Non-Final OA KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
19285278 SYSTEM AND METHOD FOR EXTRACTING NOXIOUS CHEMICALS FROM NATURALLY-OCCURRING RAW MATERIALS AND CREATING USEFUL PRODUCTS Non-Final OA Plant Synergies, LLC
18557842 SURFACE-MODIFIED POLYMERIC MEMBRANES AND METHOD OF MAKING THEREOF Final Rejection Solventum Intellectual Properties Company
18390262 METHOD FOR PRODUCING A FILTER AND A FILTER Non-Final OA Stichting IMEC Nederland
18390449 A METHOD FOR PRODUCING A BLOOD FILTER AND A BLOOD FILTER Non-Final OA Stichting IMEC Nederland
18547284 PROCESS FOR TREATING WASTE WATERS HAVING HIGH SALINE CONTENT Non-Final OA ENI S.P.A.
18381753 MEMBRANE-BASED-SELF-ASSEMBLED, CHARGED MULTI-WALLED CARBON NANOTUBE/GRAPHENE OXIDE NANOHYBRIDS Non-Final OA Khalifa University of Science and Technology
18573743 METHOD OF FILTRATING LIQUID, AND FILTRATION APPARATUS FOR FILTRATING LIQUID Non-Final OA RENASYS AS
18558798 SYSTEM AND PROCESS FOR MEASURING OF A GAS DISSOLVED IN A LIQUID Non-Final OA Searas AS
18557974 A PRESSURE CONSUMPTION REGENERATING FILTER Non-Final OA Inheriting Earth Limited
18557853 CHROMATOGRAPHY METHOD AND DEVICE, IN PARTICULAR METHOD AND DEVICE FOR SUPERCRITICAL LIQUID CHROMATOGRAPHY Non-Final OA K.D. PHARMA BEXBACH GMBH
18493228 FILTER CARTRIDGE FOR A COALESCER Final Rejection CECO Environmental Corp.
18549783 PERVIOUS CONCRETE COMPOSITION AND MINERAL MEMBRANE HAVING SAME Non-Final OA 12279479 CANADA INC.
18128175 FILTRATION SYSTEM Non-Final OA James Brown

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