Prosecution Insights
Last updated: October 25, 2026

Xiamen Changelight Co. Ltd.

Technology area: Semiconductors, Circuits & Optics

3 pending office actions • 3 art units • 3 examiners • 0 of 3 (0%) have an AI response strategy ready • 1 patents granted in the last 365 days

Analysis

Xiamen Changelight Co. Ltd. is managing 4 pending office actions in the Semiconductors, Circuits & Optics technology area. This level of activity reflects a consistent effort to protect its innovations in the semiconductor industry. The 4 pending actions indicate that the company is currently engaged in multiple active discussions with the patent office to advance its applications toward issuance.

The portfolio's prosecution is spread across 4 distinct examiners and 4 distinct art units. This distribution suggests that each of the 4 pending office actions covers a different technical specialty within the broader field of semiconductors and optics. Because the work is divided among 4 different art units, the company must adapt its prosecution strategy to the specific standards and practices of each unit. The involvement of 4 distinct examiners means that no single individual has a dominant influence over the current pending portfolio.

SPRENGER, JAIME LYNN is the busiest examiner for Xiamen Changelight Co. Ltd., with 1 pending office action. Since each of the 4 pending office actions is handled by a different examiner, SPRENGER, JAIME LYNN's role is equal to that of the other three examiners. The company must therefore prepare for 4 unique examination styles. Success in these 4 pending matters will require a tailored approach for each examiner and art unit involved.

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

Portfolio Summary

3
Total Pending OAs
1
Non-Final OAs
2
Final Rejections
0
Advisory / Quayle

Response Deadline Pressure

Based on the USPTO statutory response window for each pending office action. 1 of the docket's apps have a known mailing date; the rest are excluded from the tile counts.

0
Overdue
0
Due this week
1
Due this month
0
Due in next 60 days
0
Due later

Case Difficulty Mix

Difficulty is derived from the rejection statutes on the most recent pending office action. §101-driven and multi-statute cases are graded Hard; §112-only and obviousness-type double-patenting cases are graded Easy; everything else is Medium. "Unknown" means we have not yet parsed a statute for that office action.

2
Hard (67%)
0
Medium (0%)
1
Easy (33%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§112 only1 (33%)
Multi-statute (no §101)2 (67%)

Industry Mix

How the docket's pending cases split across USPTO tech-center bands.

0
Life Sciences
0% of docket
0
Information Tech
0% of docket
0
Communications
0% of docket
3
Semiconductors
100% of docket
0
Mechanical / Eng
0% of docket
0
Business / Other
0% of docket

Time-on-OA Estimate

Manual office-action response work runs about 10 hours per case. The time-saved bands below show what IP Author's prosecution pipeline typically delivers — a conservative 20% on the low end, 35% in the middle, 50% on the high end.

30 h
Manual time on pending OAs
6 h
Time saved (low, 20%)
10 h
Time saved (mid, 35%)
0.3 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
SPRENGER, JAIME LYNN 1 100.0% +0.0%
YEMELYANOV, DMITRIY 1 74.1% +19.4%
YEUNG LOPEZ, FEIFEI 1 81.2% -2.5%

Quick Wins (1)

Cases in front of an examiner with an allow rate of 80%+ where the difficulty is Easy or Medium. The top 1 ordered by deadline are shown.

App #TitleExaminerDue in
17886444 FLIP LIGHT EMITTING CHIP AND MANUFACTURING METHOD THEREOF YEUNG LOPEZ, FEIFEI —

Hard Cases (2)

Multi-statute / §101-driven matters, or cases in front of an examiner with an allow rate under 30%. The top 2 ordered by deadline are shown.

App #TitleExaminerDue in
18216575 SEMICONDUCTOR EPITAXY STRUCTURE AND MANUFACTURING METHOD THEREFOR, AND LED CHIP YEMELYANOV, DMITRIY 20d
18816600 LED CHIP AND LED CHIP PREPARATION METHOD SPRENGER, JAIME LYNN —

Interview Candidates (1)

Cases in front of an examiner whose interview lift is 10 percentage points or more — i.e. interviewed cases historically resolve more favorably than non-interviewed ones. The top 1 ordered by deadline are shown.

App #TitleExaminerDue in
18216575 SEMICONDUCTOR EPITAXY STRUCTURE AND MANUFACTURING METHOD THEREFOR, AND LED CHIP YEMELYANOV, DMITRIY 20d

Top Art Units

Art UnitApps
2893 1
2891 1
2899 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
18816600 LED CHIP AND LED CHIP PREPARATION METHOD SPRENGER, JAIME LYNN 2893 §102§103 Non-Final OA — Pending Aug 27, 2024
18216575 SEMICONDUCTOR EPITAXY STRUCTURE AND MANUFACTURING METHOD THEREFOR, AND LED CHIP YEMELYANOV, DMITRIY 2891 §102§103§112 Final Rejection 20d Pending Jun 29, 2023
17886444 FLIP LIGHT EMITTING CHIP AND MANUFACTURING METHOD THEREOF YEUNG LOPEZ, FEIFEI 2899 §112 Final Rejection — Pending Aug 11, 2022

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Frequently Asked Questions

How many pending USPTO office actions does Xiamen Changelight Co. Ltd. have?

Xiamen Changelight Co. Ltd. has 3 pending office actions as of October 2026, spread across 3 art units and 3 examiners.

Which USPTO examiner handles the most Xiamen Changelight Co. Ltd. applications?

Jaime Lynn Sprenger has the most, with 1 of Xiamen Changelight Co. Ltd.'s pending office actions.

What technology area are Xiamen Changelight Co. Ltd.'s patent applications in?

Mostly Semiconductors, Circuits & Optics (USPTO Tech Center 2800), based on where its pending office actions are examined.

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