Prosecution Insights
Last updated: August 18, 2026

Examiner: CEPLUCH, ALYSSA L

Tech Center 1700 • Art Units: 1722 1771 1772

This examiner grants 62% of resolved cases

Performance Statistics

62.4%
Allow Rate
-2.6% vs TC avg
569
Total Applications
+24.8%
Interview Lift
992
Avg Prosecution Days
Based on 511 resolved cases, 2023–2026

Rejection Statute Breakdown

0.5%
§101 Eligibility
9.9%
§102 Novelty
55.8%
§103 Obviousness
28.0%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18872193 CO-PROCESSING OF BIOMASS DURING FLUIDIZED COKING WITH GASIFICATION Non-Final OA EXXONMOBIL TECHNOLOGY AND ENGINEERING COMPANY
19421858 PROCESS FOR PRODUCING WAX-BASED CHEMICALS AND ALPHA-OLEFINS FROM WASTE PLASTICS BASED ON SELF-HEATING MELT DECHLORINATION Non-Final OA China University of Petroleum (East China)
18599073 MULTISTAGE REACTOR SYSTEMS AND PROCESSES FOR CONVERSION OF OXYGENATES Final Rejection LG CHEM, LTD.
18530454 INTEGRATED NAPHTHA REFORMING AND BENZYL TOLUENE PRODUCTION PROCESS Final Rejection Saudi Arabian Oil Company
18248376 RENEWABLE AVIATION KEROSENE PRODUCTION PROCESS Non-Final OA PETRÓLEO BRASILEIRO S.A. - PETROBRAS
18434760 METHOD FOR GENERATING ISOBUTENE, CATALYST FOR GENERATING ISOBUTENE, AND ISOBUTENE GENERATION SYSTEM Final Rejection NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
18434753 METHOD FOR GENERATING ISOBUTENE, CATALYST FOR GENERATING ISOBUTENE, AND ISOBUTENE GENERATION SYSTEM Final Rejection NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
18575035 THERMAL DECOMPOSITION METHOD OF USED RUBBER AND RUBBER MATERIAL FOR THERMAL DECOMPOSITION Final Rejection BRIDGESTONE CORPORATION
18642898 CATALYST SYSTEM AND ETHYLENE OLIGOMERIZATION PROCESS FOR THE PREPARATION OF LINEAR ALPHA OLEFINS Final Rejection Chevron Phillips Chemical Company LP
18558409 HYDROPROCESSING WITH INCREASED RECYCLE GAS PURITY Non-Final OA TOPSOE A/S
18286201 Process and plant for improving gasoline yield and octane number Non-Final OA Topsoe A/S
18955184 HYDROCARBON CRACKING PROCESS FOR CONVERTING RENEWABLE/CIRCULAR FEEDS TO LOWER OLEFINS Non-Final OA SHELL USA, INC.
18613733 SINGLE-STEP CATALYTIC PROCESS FOR THE PRODUCTION OF ALKYLATED AROMATICS USING CO2 Final Rejection COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH
18003843 PROCESSES FOR PREPARING C2 TO C3 HYDROCARBONS Non-Final OA Dow Global Technologies LLC
18558332 ENHANCED PRODUCTION OF LIGHTLY BRANCHED OLEFIN OLIGOMERS THROUGH OLEFIN OLIGOMERIZATION Non-Final OA ExxonMobil Chemical Patents Inc.
18860831 METHOD FOR TREATING PLASTIC PYROLYSIS OIL INCLUDING AN H2S RECYCLING STEP Non-Final OA REPSOL S.A.
18911059 INTEGRATED PROCESS SOLUTION FOR MAXIMIZING CRUDE TO LIGHT OLEFINS AND CHEMICALS Non-Final OA LUMMUS TECHNOLOGY LLC

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