Prosecution Insights
Last updated: April 19, 2026

Examiner: SPIES, BRADLEY R

Tech Center 1700 • Art Units: 1777

This examiner grants 74% of resolved cases

Performance Statistics

73.9%
Allow Rate
+8.9% vs TC avg
842
Total Applications
+20.9%
Interview Lift
910
Avg Prosecution Days
Based on 807 resolved cases, 2023–2026

Rejection Statute Breakdown

0.6%
§101 Eligibility
21.3%
§102 Novelty
45.0%
§103 Obviousness
19.0%
§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
18514904 FLUID STERILIZATION DEVICE Non-Final OA TOYODA GOSEI CO., LTD.
18283173 METHODS OF SEAWATER SOFTENING FOR DESALINATION AND MINERAL EXTRACTION Final Rejection Qatar Foundation for Education, Science and Community Development
18390449 A METHOD FOR PRODUCING A BLOOD FILTER AND A BLOOD FILTER Non-Final OA Stichting IMEC Nederland
18390262 METHOD FOR PRODUCING A FILTER AND A 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
18542721 METHODS OF LOW TRANS-MEMBRANE PRESSURE OR VACUUM FILTRATION Non-Final OA 643096 Alberta Limited
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
18029070 METHOD FOR TREATING A WASTEWATER EFFLUENT IN A SEQUENCING BATCH REACTOR (SBR) HAVING A CONSTANT LEVEL AND CONTROLLED RECOVERY Final Rejection SUEZ INTERNATIONAL
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.
18490427 SEPARATION DEVICE Non-Final OA BUNRI Incorporation
18549783 PERVIOUS CONCRETE COMPOSITION AND MINERAL MEMBRANE HAVING SAME Non-Final OA 12279479 CANADA INC.
18128175 FILTRATION SYSTEM Non-Final OA James Brown
18010626 DEVICE FOR WATER TREATMENT Non-Final OA OMITALY S.R.L.
17972075 MOBILE CLEANING DEVICE WITH STERILIZATION FUNCTION Non-Final OA KOREA ENVIRONMENTAL INDUSTRY CO., LTD

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