Prosecution Insights
Last updated: October 01, 2026

Examiner: SIMKINS, SLONE ELIZABETH

Tech Center 1700 • Art Units: 1691 1732 1735 1738

This examiner grants 54% of resolved cases

Analysis

Slone Elizabeth Simkins is an examiner in Art Unit 1691 within Tech Center 1700. With 35 resolved cases, the examiner has an allowance rate of 54.3%. This indicates that 54.3% of the applications result in a grant. The data highlights a significant interview lift of 50.0%, suggesting that interviews are exceptionally beneficial for reaching an agreement. The median pendency to allowance stands at 1253 days.

Given the 50.0% interview lift, practitioners should prioritize examiner interviews to navigate the 1253-day timeline. The 54.3% allowance rate provides a solid foundation for applicants in Art Unit 1691. Across 35 resolved cases, the examiner has demonstrated that direct engagement is a key factor for success. In Tech Center 1700, this profile suggests that verbal advocacy can significantly improve prosecution. The 1253-day median time to allowance should be factored into the overall strategy.

Written from this page's own data; every figure is computed from USPTO records and verified before publication.

Performance Statistics

54.3%
Allow Rate
-10.7% vs TC avg
80
Total Applications
+50.0%
Interview Lift
1253
Avg Prosecution Days
Based on 35 resolved cases, 2023–2026

Rejection Statute Breakdown

1.7%
§101 Eligibility
14.2%
§102 Novelty
49.3%
§103 Obviousness
32.9%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18453728 METHOD FOR RECYCLING HYDROPHOBIC DEEP EUTECTIC SOLVENT AND NICKEL LEACHING METHOD Final Rejection TOYOTA JIDOSHA KABUSHIKI KAISHA
18300285 OIL-SORBENT Final Rejection KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
18477591 HYDROGEN GENERATION IN HIGH TEMPERATURE COUNTER-CURRENT REACTOR Non-Final OA Exxonmobil Technology and Engineering Company
18274105 Methane-Reforming Catalyst and Method for Producing Same Non-Final OA LG Chem, Ltd.
18535132 METHODS OF TRANSPORTING HYDROGEN - FISCHER-TROPSCH REACTIONS AND DEHYDROGENATION AT SEPARATE CHEMICAL PROCESSING FACILITIES Non-Final OA Saudi Arabian Oil Company
18233575 SYSTEMS AND METHODS FOR PRODUCING HYDROGEN GAS FROM WATER AND METHANE Non-Final OA Saudi Arabian Oil Company
18568792 SYSTEMS AND METHODS FOR REDUCING WATER CONSUMPTION AND RECOVERING ACTIVATING METALS FROM ALUMINUM-WATER REACTIONS Non-Final OA Massachusetts Institute of Technology
18116214 CATALYST FOR NON-OXIDATIVE CONVERSION OF HYDROCARBONS TO HYDROGEN Non-Final OA CHEVRON U.S.A. INC.
18278724 METHOD FOR ISOLATING AN AQUEOUS HYDROCHLORIC ACID SOLUTION OF FECL3 FROM AN AQUEOUS MULTI-COMPONENT SYSTEM Final Rejection Bayer Aktiengesellschaft
18280903 Method and system for producing hydrogen from ammonia cracking Non-Final OA TOPSOE A/S
17778683 METHOD OF PROCESSING EXHAUST GAS Final Rejection Amrize Technology Switzerland LLC

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