Prosecution Insights
Last updated: October 27, 2026

Ciel P Contreras, USPTO Patent Examiner

Listed by the USPTO as CONTRERAS, CIEL P

Tech Center 1700 • Art Units: 1723 1754 1791 1794

This examiner grants 54% of resolved cases

Analysis

Ciel P. Contreras is an examiner in Art Unit 1723 of Tech Center 1700. He has 768 resolved cases and an allowance rate of 54.3%. The median days to allowance is 1084. These statistics indicate a moderate probability of success and a longer pendency for applications assigned to his docket.

The interview lift is 33.6%, indicating that interviews are a very effective strategy for this examiner. This high lift suggests that direct communication can significantly improve the chances of overcoming rejections and securing an allowance. Practitioners should prioritize examiner interviews as a key tool for advancing their applications.

Top companies include Robert Bosch GmbH, Kia Corporation, and Hysata Pty Ltd. Firms like Knobbe, Martens, Olson & Bear, LLP, BANNER & WITCOFF, LTD., and Bayramoglu Law Offices LLC are active in his docket. These firms have experience navigating the specific prosecution landscape of Art Unit 1723 and the examiner's requirements for patentability.

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
848
Total Applications
+33.6%
Interview Lift
1084
Avg Prosecution Days
Based on 768 resolved cases, 2023–2026

Rejection Statute Breakdown

1.0%
§101 Eligibility
15.3%
§102 Novelty
48.5%
§103 Obviousness
29.5%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18282820 Cationically Charged Membranes Non-Final OA Fujifilm Corporation
18344393 WATER PURIFIER AND METHOD FOR CONTROLLING THE SAME Final Rejection Samsung Electronics Co., Ltd.
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
18134842 ELECTROLYSIS CELL HAVING LOCALIZED ELECTRONIC CONTACT POROUS TRANSPORT LAYER Final Rejection Robert Bosch GmbH
17709130 CATALYST COMPOSITIONS, PROCESSES FOR FORMING THE CATALYST COMPOSITIONS, AND USES THEREOF Final Rejection Honda Motor Co., Ltd.
18448681 FeNi ALLOY-BASED ELECTROCATALYST FOR WATER OXIDATION Non-Final OA KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
17921930 BLENDED CONTACT FINGERS FOR PREVENTING CRACKS DURING THIN SUBSTRATE HANDLING Final Rejection LAM RESEARCH 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
18038669 ENHANCED CONVERSION OF CHEMISORBED CO2 IN AMINE-BASED ELECTROCHEMICAL SYSTEMS Non-Final OA THE GOVERNING COUNCIL OF THE UNIVERSITY OF TORONTO
18287658 METHOD FOR PREPARING TITANIUM METAL BY MOLTEN SALT ELECTROLYSIS Non-Final OA CENTRAL SOUTH UNIVERSITY

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Frequently Asked Questions

What is examiner Ciel P Contreras's allowance rate?

54.3% of resolved applications examined by Ciel P Contreras were allowed (768 resolved cases), compared with 60.0% across Art Unit 1723 over the last five years.

Does an interview help with examiner Ciel P Contreras?

This examiner's interview lift is +33.6 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Ciel P Contreras take to allow a patent?

Applications allowed by Ciel P Contreras took 1,084 days on average from filing to allowance.

Which art unit does examiner Ciel P Contreras work in?

Ciel P Contreras examines applications in Art Unit 1723 in Tech Center 1700 (Chemistry & Materials).

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