Prosecution Insights
Last updated: October 26, 2026

Xiaochun L Chen, USPTO Patent Examiner

Listed by the USPTO as CHEN, XIAOCHUN L

Tech Center 4100 • Art Units: 2824 4100

This examiner grants 92% of resolved cases

Performance Statistics

92.0%
Allow Rate
+32.0% vs TC avg
519
Total Applications
-0.5%
Interview Lift
625
Avg Prosecution Days
Based on 498 resolved cases, 2023–2026

Rejection Statute Breakdown

0.2%
§101 Eligibility
30.4%
§102 Novelty
48.9%
§103 Obviousness
19.4%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
19170675 NON-VOLATILE MEMORY DEVICE, STORAGE DEVICE INCLUDING NON-VOLATILE MEMORY DEVICE, AND METHOD OF OPERATING STORAGE DEVICE Non-Final OA SAMSUNG ELECTRONICS CO., LTD.
19069218 MEMORY DEVICES WITH FINE-GRAINED COMMAND/ADDRESS TRAINING MODES Non-Final OA Micron Technology, Inc.
19024002 MEMORY DEVICE HAVING 2-TRANSISTOR VERTICAL MEMORY CELL Non-Final OA Micron Technology, Inc.
19022900 INDICATION FOR EXITING REFRESH OF AN INVALID MEMORY BLOCK Non-Final OA Micron Technology, Inc.
18789162 PROGRAMMING MEMORY CELLS BASED ON CONTEXT IN A MEMORY ARRAY Non-Final OA Micron Technology, Inc.
18744335 EVALUATION OF BACKGROUND LEAKAGE TO SELECT WRITE VOLTAGE IN MEMORY DEVICES Non-Final OA Micron Technology, Inc.
18810223 SEMICONDUCTOR MEMORY DEVICE Non-Final OA Kioxia Corporation
19086031 OPERATING METHOD OF STORAGE DEVICE Non-Final OA SK hynix Inc.
18886002 NON-VOLATILE MEMORY ARCHITECTURE Non-Final OA STMicroelectronics International N.V.
19069048 ONE TIME PROGRAMMABLE MEMORY Non-Final OA Taiwan Semiconductor Manufacturing Company, Ltd.
18615866 MEMORY DEVICE AND METHOD Non-Final OA Taiwan Semiconductor Manufacturing Company, Ltd.

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Frequently Asked Questions

What is examiner Xiaochun L Chen's allowance rate?

92.0% of resolved applications examined by Xiaochun L Chen were allowed (498 resolved cases), compared with 86.6% across Art Unit 2824 over the last five years.

Does an interview help with examiner Xiaochun L Chen?

This examiner's interview lift is -0.5 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Xiaochun L Chen take to allow a patent?

Applications allowed by Xiaochun L Chen took 625 days on average from filing to allowance.

Which art unit does examiner Xiaochun L Chen work in?

Xiaochun L Chen examines applications in Art Unit 2824 in Tech Center 4100.

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