Prosecution Insights
Last updated: October 01, 2026

Examiner: CHERN, CHRISTINA

Tech Center 1700 • Art Units: 1721 1722 1725 1726 1755 1758 1795

This examiner grants 39% of resolved cases

Analysis

Christina Chern is an examiner in Tech Center 1700 and Art Unit 1721. The examiner has 660 resolved cases. The data shows an allowance rate of 39.1 percent for these cases. This 39.1 percent rate provides a baseline for applicants to evaluate the probability of success when their applications are assigned to this examiner.

The interview lift for this examiner is 41.3 percent. This 41.3 percent lift is a comparison to the 39.1 percent allowance rate, indicating that direct communication is a significant factor in the prosecution process. Practitioners can use this figure to evaluate the impact of conducting an interview, as it correlates with an increased probability of reaching an allowance compared to the baseline.

The median days to allowance for Chern is 1289. This 1289-day measure provides an expectation for the duration of the patent prosecution cycle. With 660 resolved cases, the examiner has a history that supports these metrics. The combination of the allowance rate and the 1289-day median pendency helps in planning patent strategies for Art Unit 1721.

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

Performance Statistics

39.1%
Allow Rate
-25.9% vs TC avg
703
Total Applications
+41.3%
Interview Lift
1289
Avg Prosecution Days
Based on 660 resolved cases, 2023–2026

Rejection Statute Breakdown

0.9%
§101 Eligibility
17.9%
§102 Novelty
47.8%
§103 Obviousness
29.0%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18712851 Battery Module and Battery Pack and Vehicle Comprising the Same Non-Final OA LG Energy Solution, Ltd.
18376288 BATTERY PACK FOR VEHICLES Non-Final OA KIA CORPORATION
18282660 SOLAR CELL STRING AND METHOD FOR PRODUCING A SOLAR CELL STRING Non-Final OA FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E. V.
18648254 SECONDARY BATTERY Non-Final OA Samsung SDI Co., Ltd.
18702742 SECONDARY BATTERY Non-Final OA Samsung SDI Co., Ltd.
18869270 THERMOELECTRIC MODULE Non-Final OA KYOCERA Corporation
18735211 PHOTOVOLTAIC COMPONENT Non-Final OA JINKO SOLAR CO., LTD.
18922923 SOLAR CELL AND METHOD FOR MANUFACTURING THE SAME Non-Final OA TRINA SOLAR CO., LTD.
18703501 Solar Cell Front Passivation Film Layer Non-Final OA Trina Solar Co., Ltd.
17585470 LIGHTWEIGHT PASSIVE RADIATIVE COOLING TO ENHANCE CONCENTRATING PHOTOVOLTAICS Non-Final OA Purdue Research Foundation
18785115 PHOTOVOLTAIC CELLS IN STRUCTURAL COMPOSITE AUTOMOTIVE PANELS Non-Final OA GM Global Technology Operations LLC
17972432 SOLAR CELLS HAVING JUNCTIONS RETRACTED FROM CLEAVED EDGES Final Rejection Maxeon Solar Pte. Ltd.
18715734 BIPV-APPLICABLE HIGH-POWER SHINGLED PHOTOVOLTAIC MODULE AND MANUFACTURING METHOD THEREFOR Final Rejection KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY

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