Prosecution Insights
Last updated: October 04, 2026

Law Office Of Katsuhiro Arai

Technology areas: Chemistry & Materials • Semiconductors, Circuits & Optics

26 pending office actions • 10 clients • 24 examiners • 16 art units • 0 of 26 (0%) have an AI response strategy ready • 33 patents granted in the last 365 days

Analysis

Law Office of Katsuhiro Arai specializes in the Chemistry & Materials technology area, with a history of 1366 career applications. The firm maintains a resolved allowance rate of 89.08 percent, demonstrating the percentage of its applications that successfully result in a patent grant. This total of 1366 career applications indicates the firm's experience in handling chemical and material science disclosures.

The firm's prosecution process involves an average of 2.83 office actions per allowance. This metric represents the typical number of communications with patent examiners required to reach an allowance for a given application. Currently, the firm has 13 pending office actions, which represent its active workload within the Chemistry & Materials practice. These 13 pending office actions are fewer than the 1366 career applications filed by the firm.

The 89.08 percent allowance rate and the 2.83 office actions per allowance provide a data-grounded basis for evaluating the firm's prosecution performance. The 13 pending office actions show the firm's immediate focus, while the 1366 career applications document its involvement in the field over time. These figures offer a view of the firm's activity and results.

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

Quality Metrics (n=1366 apps, methodology: how we score firms)

89.1%
Allowance Rate
n=1366
+0.63σ
Allowance Rate (norm)
n=1366
2.8
OAs to Allowance
n=1061
-0.33σ
OAs to Allow (norm)
n=1061
931 days
Time to Allowance
n=1061
+8.4pp
Interview Lift
n=1366
22.2%
RCE Rate
n=1366
0.2%
Appeal Rate
n=1366

Rejection Performance (% of received rejections ultimately overcome)

84.6%
§101 Overcome
n=26
83.3%
§102 Overcome
n=437
85.4%
§103 Overcome
n=780
85.5%
§112 Overcome
n=394

Specialization & Scale

H01G, H01F, Y10T
Top CPC Subclasses
22%
Top-3 CPC Share
n=1366
2
Practitioners
n=1366
683.0
Apps / Practitioner
n=1366

Portfolio Summary

26
Total Pending OAs
21
Non-Final OAs
4
Final Rejections
1
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.

1
Overdue
0
Due this week
2
Due this month
1
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 (1)Due ≤ 30 days (2)Due ≤ 60 days (1)

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.

12
Hard (46%)
12
Medium (46%)
2
Easy (8%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§103 only10 (38%)
§102 only2 (8%)
§112 only2 (8%)
Multi-statute (no §101)12 (46%)

Industry Mix

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

12
Life Sciences
46% of docket
0
Information Tech
0% of docket
0
Communications
0% of docket
5
Semiconductors
19% of docket
1
Mechanical / Eng
4% of docket
8
Business / Other
31% 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.

260 h
Manual time on pending OAs
52 h
Time saved (low, 20%)
91 h
Time saved (mid, 35%)
2.3 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
SINCLAIR, DAVID M 2 68.4% +19.5%
WARD, PAUL V 2 83.2% -12.2%
LEONG, NATHAN T 1 71.4% +24.1%
MATTHEWS, TESSA M 1 83.0% +24.3%
RAMASWAMY, ARUN 1 84.7% +12.3%
THOMAS, ERIC W 1 82.5% -1.9%
YOON, TAE H 1 66.5% +24.7%
YOUNG, WILLIAM D 1 54.3% +15.2%
RICE, STEVEN 1 39.3% +43.7%
NGUYEN, KEVIN NMN 1 82.5% +8.7%

Quick Wins (2)

Cases in front of an examiner with an allow rate of 80%+ where the difficulty is Easy or Medium. The top 2 ordered by deadline are shown.

App #TitleExaminerDue in
19145821 HIGH SHAPE-RETENTION RETRACTOR MATTHEWS, TESSA M —
18262151 METHOD FOR PRODUCING BENZOXAZINE COMPOUND WARD, PAUL V —

Hard Cases (12)

Multi-statute / §101-driven matters, or cases in front of an examiner with an allow rate under 30%. The top 8 ordered by deadline are shown.

App #TitleExaminerDue in
19071377 MULTILAYER CERAMIC ELECTRONIC COMPONENT, PACKAGE BODY, AND CIRCUIT BOARD RAMASWAMY, ARUN —
19101401 ELECTROLYTIC CAPACITOR AND METHOD FOR MANUFACTURING SAME SINCLAIR, DAVID M —
18868093 METHOD FOR MANUFACTURING ELECTRONIC COMPONENT, AND ELECTRONIC COMPONENT THOMAS, ERIC W —
18868101 ELECTROLYTIC CAPACITOR, METHOD FOR PRODUCING SAME, AND HOLDING MEMBER SINCLAIR, DAVID M —
18710371 METHOD FOR PRODUCING POLYETHER NITRILE YOON, TAE H —
18696300 RELEASING PRIMER COMPOSITION AND PRINTED MATTER RICE, STEVEN —
18692980 CONDUCTIVE PIGMENT PASTE, MIXTURE PASTE, AND ELECTRODE FOR LITHIUM ION BATTERY NGUYEN, KEVIN NMN —
18580119 CURABLE RESIN COMPOSITION, VARNISH, PREPREG, AND CURED PRODUCT WASHVILLE, JEFFREY D —

Interview Candidates (8)

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
18702728 CONDUCTIVE RESIN COMPOSITION YOUNG, WILLIAM D 22d
19167931 METHODS FOR PRODUCING CARBON NANOTUBE DISPERSION PASTE, MIXTURE PASTE, AND ELECTRODE LAYER FOR LITHIUM ION SECONDARY BATTERY LEONG, NATHAN T —
19145821 HIGH SHAPE-RETENTION RETRACTOR MATTHEWS, TESSA M —
19071377 MULTILAYER CERAMIC ELECTRONIC COMPONENT, PACKAGE BODY, AND CIRCUIT BOARD RAMASWAMY, ARUN —
19101401 ELECTROLYTIC CAPACITOR AND METHOD FOR MANUFACTURING SAME SINCLAIR, DAVID M —
18868101 ELECTROLYTIC CAPACITOR, METHOD FOR PRODUCING SAME, AND HOLDING MEMBER SINCLAIR, DAVID M —
18710371 METHOD FOR PRODUCING POLYETHER NITRILE YOON, TAE H —
18696300 RELEASING PRIMER COMPOSITION AND PRINTED MATTER RICE, STEVEN —

Client Portfolio (10 clients)

Top Art Units

Art UnitApps
28482
16222
17181
37731
28471
17611
17871
28001
17321
17671

Pending Office Actions

App #TitleClientExaminerArt UnitStatutesStatusDue inAIFiled
19167931 METHODS FOR PRODUCING CARBON NANOTUBE DISPERSION PASTE, MIXTURE PASTE, AND ELECTRODE LAYER FOR LITHIUM ION SECONDARY BATTERY Kansai Paint Co., Ltd. LEONG, NATHAN T 1718 §112 Non-Final OA — Pending Sep 23, 2025
19145821 HIGH SHAPE-RETENTION RETRACTOR Shinwa Syoji Co., Ltd. MATTHEWS, TESSA M 3773 §103 Non-Final OA — Pending Jul 03, 2025
19071377 MULTILAYER CERAMIC ELECTRONIC COMPONENT, PACKAGE BODY, AND CIRCUIT BOARD Taiyo Yuden Co., Ltd. RAMASWAMY, ARUN §102§103 Non-Final OA — Pending Mar 05, 2025
19101401 ELECTROLYTIC CAPACITOR AND METHOD FOR MANUFACTURING SAME Elna Co., Ltd. SINCLAIR, DAVID M 2847 §102§103 Non-Final OA — Pending Feb 05, 2025
18868093 METHOD FOR MANUFACTURING ELECTRONIC COMPONENT, AND ELECTRONIC COMPONENT Elna Co., Ltd. THOMAS, ERIC W 2848 §102§103 Non-Final OA — Pending Nov 21, 2024
18868101 ELECTROLYTIC CAPACITOR, METHOD FOR PRODUCING SAME, AND HOLDING MEMBER Elna Co., Ltd. SINCLAIR, DAVID M 2848 §102§103 Non-Final OA — Pending Nov 21, 2024
18710371 METHOD FOR PRODUCING POLYETHER NITRILE Daikin Industries, Ltd. YOON, TAE H §102§103 Non-Final OA — Pending May 15, 2024
18702728 CONDUCTIVE RESIN COMPOSITION Sakata Inx Corporation YOUNG, WILLIAM D 1761 §103 Non-Final OA 22d Pending Apr 18, 2024
18696300 RELEASING PRIMER COMPOSITION AND PRINTED MATTER Sakata Inx Corporation RICE, STEVEN 1787 §103§112 Non-Final OA — Pending Mar 27, 2024
18692980 CONDUCTIVE PIGMENT PASTE, MIXTURE PASTE, AND ELECTRODE FOR LITHIUM ION BATTERY Kansai Paint Co., Ltd. NGUYEN, KEVIN NMN §102§103 Non-Final OA — Pending Mar 18, 2024
18683612 PHOTOCURABLE INKJET PRINTING INK COMPOSITION Sakata Inx Corporation BUTCHER, ROBERT T §103 Non-Final OA — Pending Feb 14, 2024
18683485 POLYIMIDE, POLYIMIDE VARNISH, AND POLYIMIDE THIN FILM Honshu Chemical Industry Co., Ltd. BERRO, ADAM JOSEPH §112 Non-Final OA — Pending Feb 13, 2024
18293134 NOVEL BENZOXAZINE COMPOUND, RESIN RAW MATERIAL COMPOSITION CONTAINING THE SAME, CURABLE RESIN COMPOSITION, AND CURED PRODUCT THEREOF Honshu Chemical Industry Co., Ltd. FROST, ANTHONY J §103 Non-Final OA — Pending Jan 29, 2024
18423067 DIELECTRIC MATERIAL COMPRISING MAIN COMPONENT AND FIRST, SECOND, AND THIRD SUBCOMPONENTS AND MULTILAYER CERAMIC ELECTRONIC DEVICE COMPRISING SAME Taiyo Yuden Co., Ltd. DOLE, TIMOTHY J 2800 §103 Final Rejection — Pending Jan 25, 2024
18580119 CURABLE RESIN COMPOSITION, VARNISH, PREPREG, AND CURED PRODUCT Honshu Chemical Industry Co., Ltd. WASHVILLE, JEFFREY D §102§103 Non-Final OA — Pending Jan 17, 2024
18568191 COOLANT COMPOSITION FOR FUEL CELL Cci Holdings Inc. OYER, ANDREW J §102 Non-Final OA — Pending Dec 07, 2023
18559258 CONDUCTIVE RESIN COMPOSITION Sakata Inx Corporation WHITELEY, JESSICA 1732 §102§103 Final Rejection — Pending Nov 06, 2023
18556275 INK SET Sakata Inx Corporation STANLEY, JANE L 1767 §103 Non-Final OA — Pending Oct 19, 2023
18552654 PRESSURE-SENSITIVE ADHESIVE COMPOSITION AND PRESSURE-SENSITIVE ADHESIVE TAPE Teraoka Seisakusho Co., Ltd. SASTRI, SATYA B 1762 §103 Final Rejection — Pending Sep 26, 2023
18547326 WHITE INK COMPOSITION Sakata Inx Corporation GOLOBOY, JAMES C 1771 §102§103§112 Non-Final OA — Pending Aug 21, 2023
18264883 WHITE INK COMPOSITION Sakata Inx Corporation HALL, DEVE V. 1763 §103 Non-Final OA 2d overdue Pending Aug 09, 2023
18262151 METHOD FOR PRODUCING BENZOXAZINE COMPOUND Honshu Chemical Industry Co., Ltd. WARD, PAUL V 1622 §102 Non-Final OA — Pending Jul 19, 2023
18262136 NOVEL METHOD FOR PRODUCING BENZOXAZINE COMPOUND Honshu Chemical Industry Co., Ltd. WARD, PAUL V 1622 §102§103 Non-Final OA — Pending Jul 19, 2023
18171169 COIL COMPONENT, CIRCUIT BOARD ARRANGEMENT, ELECTRONIC DEVICE, AND METHOD OF MANUFACTURING COIL COMPONENT Taiyo Yuden Co., Ltd. LIAN, MANG TIN BIK 2837 §102§103 Non-Final OA — Pending Feb 17, 2023
18006712 TWO-COMPONENT ADHESIVE Cemedine Co., Ltd. NGUYEN, HA S 1766 §103 Non-Final OA 21d Pending Jan 24, 2023
17771427 METHOD FOR PRODUCING 2,2'-BIS(CARBOXYMETHOXY)-1,1'-BINAPHTHYL Honshu Chemical Industry Co., Ltd. KELLY-O'NEILL, YOLANDA LYNNETTE 1692 §103 Final Rejection 34d Pending Apr 22, 2022

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