Prosecution Insights
Last updated: October 27, 2026

Gigaphoton Inc.

Technology areas: Semiconductors, Circuits & Optics • Medical Devices & Mechanical Engineering

19 pending office actions • 6 art units • 13 examiners • 0 of 19 (0%) have an AI response strategy ready • 38 patents granted in the last 365 days

Analysis

Gigaphoton Inc. has 19 pending office actions in Semiconductors, Circuits & Optics. The docket spans 13 distinct examiners and 6 distinct art units, combining broad examiner coverage with repeated activity within some examination groups. This distribution calls for portfolio coordination, but it also suggests that art-unit-specific review can identify recurring technical or procedural themes.

RIDDLE, CHRISTINA A is the busiest examiner, with 5 pending matters. The concentration is sufficient to justify a dedicated review of those matters for consistent claim treatment and response positions, while the wider examiner distribution means that one examiner relationship cannot define the overall prosecution approach.

For counsel, the practical structure is a central docket with separate workstreams by art unit and examiner. Shared technical positions may improve consistency across related matters, but each response should remain tied to the particular rejection record and examination context.

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

Portfolio Summary

19
Total Pending OAs
11
Non-Final OAs
6
Final Rejections
2
Advisory / Quayle

Response Deadline Pressure

Based on the USPTO statutory response window for each pending office action. 4 of the docket's apps have a known mailing date; the rest are excluded from the tile counts.

2
Overdue
0
Due this week
2
Due this month
0
Due in next 60 days
0
Due later

Deadline Fire Line

Every pending office action with a known statutory deadline, placed on a days-until-due axis. Dots left of Today are overdue; the further right, the more runway. Cases that share a deadline window stack vertically. 4 of the docket's apps have a known mailing date.

-30dToday30d60d90d120d
Overdue (2)Due ≤ 30 days (2)

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.

6
Hard (32%)
12
Medium (63%)
1
Easy (5%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§101 only1 (5%)
§101 + other1 (5%)
§103 only12 (63%)
§112 only1 (5%)
Multi-statute (no §101)4 (21%)

Industry Mix

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

0
Life Sciences
0% of docket
1
Information Tech
5% of docket
0
Communications
0% of docket
13
Semiconductors
68% of docket
5
Mechanical / Eng
26% 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.

190 h
Manual time on pending OAs
38 h
Time saved (low, 20%)
66 h
Time saved (mid, 35%)
1.7 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
RIDDLE, CHRISTINA A 5 81.0% +14.0%
NGUYEN, PHUONG T 2 74.0% +36.7%
ZHANG, YUANDA 2 84.1% +11.9%
NGUYEN, HUNG 1 90.7% +9.0%
PERSAUD, DEORAM 1 77.1% +11.7%
ASFAW, MESFIN T 1 83.1% +13.9%
TORRICO-LOPEZ, ALAN 1 29.3% +37.3%
LI, LARRY 1 66.7% +66.7%
RHUE, ABIGAIL H 1 53.3% +37.5%
KING, JOSHUA 1 64.9% +27.5%

Quick Wins (8)

Cases in front of an examiner with an allow rate of 80%+ where the difficulty is Easy or Medium. The top 8 ordered by deadline are shown.

App #TitleExaminerDue in
18746278 GAS LASER DEVICE AND ELECTRONIC DEVICE MANUFACTURING METHOD RIDDLE, CHRISTINA A 26d overdue
18913610 PROFILE DISPLAY DEVICE, LASER DEVICE, AND ELECTRONIC DEVICE MANUFACTURING METHOD RIDDLE, CHRISTINA A 13d
18348518 LASER APPARATUS AND METHOD OF MANUFACTURING ELECTRONIC DEVICE ZHANG, YUANDA 28d
19173277 TARGET SUPPLY DEVICE, EXTREME ULTRAVIOLET LIGHT GENERATION APPARATUS, AND ELECTRONIC DEVICE MANUFACTURING METHOD RIDDLE, CHRISTINA A —
19047910 CHAMBER DEVICE, GAS LASER DEVICE, AND ELECTRONIC DEVICE MANUFACTURING METHOD NGUYEN, HUNG —
19044083 LASER DEVICE AND ELECTRONIC DEVICE MANUFACTURING METHOD ASFAW, MESFIN T —
19016756 CONTROLLER, LASER DEVICE, AND ELECTRONIC DEVICE MANUFACTURING METHOD RIDDLE, CHRISTINA A —
18357356 BEARING APPARATUS AND LASER APPARATUS COMPRISING BEARING APPARATUS ZHANG, YUANDA —

Hard Cases (6)

Multi-statute / §101-driven matters, or cases in front of an examiner with an allow rate under 30%. The top 6 ordered by deadline are shown.

App #TitleExaminerDue in
19044299 EXTREME ULTRAVIOLET LIGHT GENERATION SYSTEM AND ELECTRONIC DEVICE MANUFACTURING METHOD PERSAUD, DEORAM —
19012476 LASER SYSTEM AND ELECTRONIC DEVICE MANUFACTURING METHOD RIDDLE, CHRISTINA A —
18797560 RESIDUAL PULSE COST CALCULATION METHOD AND PROCESSOR TORRICO-LOPEZ, ALAN —
18796333 EUV LIGHT GENERATION SYSTEM AND ELECTRONIC DEVICE MANUFACTURING METHOD LI, LARRY —
18599445 LASER PROCESSING METHOD AND LASER PROCESSING SYSTEM NGUYEN, PHUONG T —
18332597 CONTROL METHOD OF LASER SYSTEM, LASER SYSTEM, AND ELECTRONIC DEVICE MANUFACTURING METHOD KING, JOSHUA —

Interview Candidates (15)

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 8 ordered by deadline are shown.

App #TitleExaminerDue in
18746278 GAS LASER DEVICE AND ELECTRONIC DEVICE MANUFACTURING METHOD RIDDLE, CHRISTINA A 26d overdue
18913610 PROFILE DISPLAY DEVICE, LASER DEVICE, AND ELECTRONIC DEVICE MANUFACTURING METHOD RIDDLE, CHRISTINA A 13d
18348518 LASER APPARATUS AND METHOD OF MANUFACTURING ELECTRONIC DEVICE ZHANG, YUANDA 28d
19173277 TARGET SUPPLY DEVICE, EXTREME ULTRAVIOLET LIGHT GENERATION APPARATUS, AND ELECTRONIC DEVICE MANUFACTURING METHOD RIDDLE, CHRISTINA A —
19044299 EXTREME ULTRAVIOLET LIGHT GENERATION SYSTEM AND ELECTRONIC DEVICE MANUFACTURING METHOD PERSAUD, DEORAM —
19044083 LASER DEVICE AND ELECTRONIC DEVICE MANUFACTURING METHOD ASFAW, MESFIN T —
19016756 CONTROLLER, LASER DEVICE, AND ELECTRONIC DEVICE MANUFACTURING METHOD RIDDLE, CHRISTINA A —
19012476 LASER SYSTEM AND ELECTRONIC DEVICE MANUFACTURING METHOD RIDDLE, CHRISTINA A —

Top Art Units

Art UnitApps
2882 8
3761 4
2828 4
3625 1
2881 1
2119 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
19173277 TARGET SUPPLY DEVICE, EXTREME ULTRAVIOLET LIGHT GENERATION APPARATUS, AND ELECTRONIC DEVICE MANUFACTURING METHOD RIDDLE, CHRISTINA A 2882 §103 Non-Final OA — Pending Apr 08, 2025
19047910 CHAMBER DEVICE, GAS LASER DEVICE, AND ELECTRONIC DEVICE MANUFACTURING METHOD NGUYEN, HUNG 2882 §103 Non-Final OA — Pending Feb 07, 2025
19044299 EXTREME ULTRAVIOLET LIGHT GENERATION SYSTEM AND ELECTRONIC DEVICE MANUFACTURING METHOD PERSAUD, DEORAM 2882 §102§103 Non-Final OA — Pending Feb 03, 2025
19044083 LASER DEVICE AND ELECTRONIC DEVICE MANUFACTURING METHOD ASFAW, MESFIN T 2882 §103 Non-Final OA — Pending Feb 03, 2025
19016756 CONTROLLER, LASER DEVICE, AND ELECTRONIC DEVICE MANUFACTURING METHOD RIDDLE, CHRISTINA A 2882 §103 Non-Final OA — Pending Jan 10, 2025
19012476 LASER SYSTEM AND ELECTRONIC DEVICE MANUFACTURING METHOD RIDDLE, CHRISTINA A 2882 §102§103 Non-Final OA — Pending Jan 07, 2025
18913610 PROFILE DISPLAY DEVICE, LASER DEVICE, AND ELECTRONIC DEVICE MANUFACTURING METHOD RIDDLE, CHRISTINA A 2882 §103 Final Rejection 13d Pending Oct 11, 2024
18797560 RESIDUAL PULSE COST CALCULATION METHOD AND PROCESSOR TORRICO-LOPEZ, ALAN 3625 §101 Final Rejection — Pending Aug 08, 2024
18796333 EUV LIGHT GENERATION SYSTEM AND ELECTRONIC DEVICE MANUFACTURING METHOD LI, LARRY 2881 §103§112 Non-Final OA — Pending Aug 07, 2024
18746278 GAS LASER DEVICE AND ELECTRONIC DEVICE MANUFACTURING METHOD RIDDLE, CHRISTINA A 2882 §103 Non-Final OA 26d overdue Pending Jun 18, 2024
18599445 LASER PROCESSING METHOD AND LASER PROCESSING SYSTEM NGUYEN, PHUONG T 3761 §103§112 Non-Final OA — Pending Mar 08, 2024
18487994 LASER PROCESSING APPARATUS, LASER PROCESSING SYSTEM, AND LASER PROCESSING METHOD RHUE, ABIGAIL H 3761 §103 Non-Final OA — Pending Oct 16, 2023
18357356 BEARING APPARATUS AND LASER APPARATUS COMPRISING BEARING APPARATUS ZHANG, YUANDA 2828 §103 Non-Final OA — Pending Jul 24, 2023
18351712 LASER SYSTEM, SPECTRUM WAVEFORM CALCULATION METHOD, AND ELECTRONIC DEVICE MANUFACTURING METHOD NGUYEN, PHUONG T 3761 §103 Final Rejection — Pending Jul 13, 2023
18348518 LASER APPARATUS AND METHOD OF MANUFACTURING ELECTRONIC DEVICE ZHANG, YUANDA 2828 §103 Final Rejection 28d Pending Jul 07, 2023
18332597 CONTROL METHOD OF LASER SYSTEM, LASER SYSTEM, AND ELECTRONIC DEVICE MANUFACTURING METHOD KING, JOSHUA 2828 §101§102§103 Non-Final OA — Pending Jun 09, 2023
17818180 LINE NARROWING GAS LASER DEVICE, CONTROL METHOD THEREOF, AND ELECTRONIC DEVICE MANUFACTURING METHOD VAN ROY, TOD THOMAS 2828 §103 Non-Final OA 97d overdue Pending Aug 08, 2022
17858674 INFORMATION PROCESSING DEVICE, INFORMATION PROCESSING METHOD, AND SEMICONDUCTOR MANUFACTURING SYSTEM LAUGHLIN, NATHAN L 2119 §103 Final Rejection — Pending Jul 06, 2022
17569380 LASER APPARATUS, LASER PROCESSING SYSTEM, AND METHOD FOR MANUFACTURING ELECTRONIC DEVICE WARD, THOMAS JOHN 3761 §112 Final Rejection — Pending Jan 05, 2022

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Frequently Asked Questions

How many pending USPTO office actions does Gigaphoton Inc. have?

Gigaphoton Inc. has 19 pending office actions as of October 2026, spread across 6 art units and 13 examiners.

Which USPTO examiner handles the most Gigaphoton Inc. applications?

Christina A Riddle has the most, with 5 of Gigaphoton Inc.'s pending office actions.

What technology area are Gigaphoton Inc.'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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