Prosecution Insights
Last updated: October 01, 2026

Examiner: CONTRERAS, CIEL P

Tech Center 1700 • Art Units: 1723 1754 1791 1794

This examiner grants 54% of resolved cases

Analysis

Ciel P. Contreras has resolved 768 cases in Tech Center 1700. Her examination history in Art Unit 1723 shows an allowance rate of 54.3 percent. This figure is a primary indicator for applicants to use when evaluating the likelihood of a favorable outcome and for preparing for a potentially challenging prosecution process.

The median days to allowance for this examiner is 1084. This timeframe is essential for practitioners to consider when advising clients on the expected duration of the patenting process. A timeline of 1084 days helps in setting realistic goals for the various stages of prosecution and for budgeting legal expenses over the life of the application.

The interview lift for this examiner is 33.6 percent. This represents a significant increase over the 54.3 percent allowance rate, indicating that interviews are an effective method for resolving issues. The 33.6 percent lift suggests that practitioners should prioritize personal communication with the examiner to clarify technical disagreements and move the application toward a grant.

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
831
Total Applications
+33.6%
Interview Lift
1084
Avg Prosecution Days
Based on 768 resolved cases, 2023–2026

Rejection Statute Breakdown

1.0%
§101 Eligibility
15.2%
§102 Novelty
48.6%
§103 Obviousness
29.5%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18167979 ELECTROLYTIC ELUENT GENERATORS Final Rejection DIONEX CORPORATION
18308129 CONDUCTIVE, ELECTROCHEMICALLY AND CHEMICALLY STABLE MATERIAL Non-Final OA Robert Bosch GmbH
18134842 ELECTROLYSIS CELL HAVING LOCALIZED ELECTRONIC CONTACT POROUS TRANSPORT LAYER Final Rejection Robert Bosch GmbH
18134835 ELECTROLYSIS CELL HAVING ELECTRODE LOCALIZED CONTACTING REGIONS Final Rejection Robert Bosch GmbH
18134827 ELECTROLYSIS CELL HAVING A POROUS TRANSPORT ELECTRODE WITH INFILTRATED IONOMER Final Rejection Robert Bosch GmbH
17709130 CATALYST COMPOSITIONS, PROCESSES FOR FORMING THE CATALYST COMPOSITIONS, AND USES THEREOF Final Rejection Honda Motor Co., Ltd.
18601073 HYDROGEN GENERATION AND CARBON DIOXIDE STORAGE SYSTEM WITH INCREASED PROCESSING CAPACITY OF CARBON DIOXIDE Non-Final OA KIA CORPORATION
18143390 HYDROGEN GENERATION AND CARBON DIOXIDE STORAGE SYSTEM CAPABLE OF SELECTIVELY DISSOLVING AND STORING CARBON DIOXIDE Non-Final OA KIA CORPORATION
18555269 Electrolysis device Non-Final OA Siemens Energy Global GmbH & Co. KG
18400950 METHOD OF ELECTRODEPOSITION IN SEAWATER FOR THE GROWTH OF CONSTRUCTION MATERIALS Non-Final OA Northwestern University
17925918 ELECTROCHEMICAL SYNTHESIS OF METAL SUPERHYDRIDES Final Rejection Carnegie Mellon University
18036263 SYSTEMS AND METHODS FOR THINNING TRANSITION METAL DICHALCOGENIDES Non-Final OA BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM
17843392 ELECTROCHEMICAL LITHIUM EXTRACTION FOR BATTERY MATERIALS Non-Final OA Battelle Memorial Institute
18213054 METHOD AND SYSTEM FOR RECYCLING LITHIUM ION BATTERIES USING ELECTROCHEMICAL LITHIUM ION PURIFICATION Non-Final OA University of Kentucky Research Foundation
18107715 METHOD FOR ELECTROCHEMICAL GRAPHITIZATION OF CARBON FIBER Non-Final OA UT-Battelle, LLC
18143220 Electrified Membrane Flow-Cell Reactor For Concurrent Nitrate Reduction And Ammonia Production From Wastewater Non-Final OA Qingdao University of Technology
18124972 SYSTEMS AND METHODS FOR PRODUCING ONE OR MORE CHEMICALS USING CARBON DIOXIDE PRODUCED BY FERMENTATION Final Rejection POET Research, Inc.
18037077 Electrodeionization Configuration for Enhanced Boron Removal Final Rejection Evoqua Water Technologies LLC
17613867 METHOD FOR PRODUCING FLUORINE GAS AND DEVICE FOR PRODUCING FLUORINE GAS Non-Final OA SHOWA DENKO K.K.
18304609 HYDROGEN DEGASSING USING MEMBRANE Non-Final OA HYDROGENICS CORPORATION
18139270 TWO-COMPARTMENT ELECTROLYZER Non-Final OA VERDEEN CHEMICALS INC.
17886924 APPARATUS FOR ELECTRO-CHEMICAL EXTRACTION OF ELEMENTAL LEAD FROM DROSS Non-Final OA VERDEEN CHEMICALS INC.
17737869 ELECTROLYTIC EXTRACTION OF ELEMENTAL METAL FROM METAL COMPOUNDS Non-Final OA VERDEEN CHEMICALS INC.

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