Prosecution Insights
Last updated: April 19, 2026

Examiner: CEPLUCH, ALYSSA L

Tech Center 1700 • Art Units: 1722 1772

This examiner grants 62% of resolved cases

Performance Statistics

62.2%
Allow Rate
-2.8% vs TC avg
562
Total Applications
+25.0%
Interview Lift
1031
Avg Prosecution Days
Based on 497 resolved cases, 2023–2026

Rejection Statute Breakdown

0.1%
§101 Eligibility
12.8%
§102 Novelty
52.7%
§103 Obviousness
27.3%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18530454 INTEGRATED NAPHTHA REFORMING AND BENZYL TOLUENE PRODUCTION PROCESS Non-Final OA Saudi Arabian Oil Company
18642898 CATALYST SYSTEM AND ETHYLENE OLIGOMERIZATION PROCESS FOR THE PREPARATION OF LINEAR ALPHA OLEFINS Non-Final OA Chevron Phillips Chemical Company LP
18428349 OLEFIN/PARAFFIN SEPARATION USING RECTIFIED ETS-4 Final Rejection Chevron Phillips Chemical Company LP
18623523 Diels-Alder coupling for cycloalkane production for sustainable aviation fuel Non-Final OA Massachusetts Institute of Technology
18470962 CONVERSION OF WASTE PLASTICS TO PETROCHEMICALS Final Rejection LUMMUS TECHNOLOGY LLC
18717874 Process and System for Producing One or More Hydrocarbons Non-Final OA Linde GmbH
18549586 Method and Plant for Steam Cracking Non-Final OA LINDE GMBH
18041783 METHOD AND PROCESS ARRANGEMENT FOR PRODUCING HYDROCARBONS AND USE Non-Final OA TEKNOLOGIAN TUTKIMUSKESKUS VTT OY
17872714 PROCESS FOR CONVERTING OLEFINS TO DISTILLATE FUELS Non-Final OA UOP LLC
18704131 PROCESS FOR PRODUCTION OF A LOW-AROMATIC HYDROCARBON FROM PYROLYSIS OIL Non-Final OA Topsoe A/S
18558409 HYDROPROCESSING WITH INCREASED RECYCLE GAS PURITY Non-Final OA TOPSOE A/S
18286201 Process and plant for improving gasoline yield and octane number Final Rejection Topsoe A/S
18254611 SELECTIVE AND FLEXIBLE PRODUCTION OF SYNTHETIC GASOLINE Final Rejection TOPSOE A/S
18002177 Method for selective decarboxylation of oxygenates Non-Final OA TOPSOE A/S
18252565 ELECTROTECHNICAL FLUID AND A METHOD FOR MANUFACTURING THE SAME Non-Final OA Neste Oyj
18312898 CO-PROCESSING ROUTE FOR HYDROTREATING POLYMER WASTE-BASED MATERIAL Non-Final OA Neste Oyj
18738261 PROCESS FOR ISOMERIZATION OF 2,4,4-TRIMETHYLPENT-2-ENE TO 2,4,4-TRIMETHYLPENT-1-ENE Non-Final OA Evonik Oxeno GmbH & Co. KG
18613733 SINGLE-STEP CATALYTIC PROCESS FOR THE PRODUCTION OF ALKYLATED AROMATICS USING CO2 Non-Final OA COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH
18692899 HOT RECYCLED CONTENT PYROLYSIS VAPOR DIRECTLY TO CROSS-OVER SECTION OF CRACKER FURNACE Non-Final OA ExxonMobil Product Solutions Company
18567956 CHEMICAL RECYCLING FACILITY AND PROCESS WITH ENHANCED INTEGRATION Final Rejection ExxonMobil Product Solutions Company
18558376 MIXED LIQUIFIED PYROLYSIS GAS WITH RECYCLED CONTENT Final Rejection ExxonMobil Product Solutions Company
17755320 PROCESSES AND SYSTEMS FOR MAKING RECYCLE CONTENT HYDROCARBONS THROUGH AN ETHYLENE FRACTIONATOR Non-Final OA ExxonMobil Product Solutions Company
18439226 ETHANOL DEHYDRATION PROCESS Non-Final OA Scientific Design Company, Inc.
18580753 CATALYST ASSISTED PYROLYSIS PROCESS FOR CONVERTING MIXED PLASTIC WASTE TO FUELS Non-Final OA PACT FUEL, LLC
17728501 PROCESSES FOR CATALYTIC PARAFFIN DEHYDROGENATION AND CATALYST RECOVERY Non-Final OA Kellogg Brown & Root LLC
18277281 A process for the treatment of waste tyres Non-Final OA Politecnico di Milano
18235908 METHOD FOR RECYCLING WASTE ENGINE OIL Final Rejection PurePath(Chongqing) Petroleum Engineering Co., LTD
18312814 Lipid-Assisted Conversion Non-Final OA Renewable Energy Group, Inc.
17470195 PRODUCTION OF LIQUEFIED PETROLEUM GAS (LPG) HYDROCARBONS FROM CARBON DIOXIDE-CONTAINING FEEDS Final Rejection Gas Technology Institute
17427057 Method for Catalytic Conversion of Hydrocarbon with Downer Reactor and Device Thereof Non-Final OA Qunzhu Li

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