Prosecution Insights
Last updated: October 25, 2026

Nippon Steel Stainless Steel Corporation

Technology area: Chemistry & Materials

11 pending office actions • 5 art units • 8 examiners • 0 of 11 (0%) have an AI response strategy ready • 11 patents granted in the last 365 days

Analysis

Nippon Steel Stainless Steel Corporation has 11 pending office actions in the Chemistry & Materials technology area. These actions are distributed among 8 distinct examiners and 4 distinct art units. KOSHY, JOPHY STEPHEN is the busiest examiner, responsible for 3 pending office actions. The concentration of 11 actions into 4 art units suggests a high density of filings in specific technical categories.

The 11 pending office actions within the Chemistry & Materials sector represent the core of the company's current prosecution activity. With 8 distinct examiners assigned, there is some variety in the review process, although the 4 distinct art units indicate a more focused technical scope than other large portfolios. KOSHY, JOPHY STEPHEN handles 3 pending office actions, making this examiner a key figure for the company's immediate outcomes. This alignment of multiple actions under a small number of art units and examiners like KOSHY, JOPHY STEPHEN may allow for more consistent prosecution strategies across related patent applications.

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

Portfolio Summary

11
Total Pending OAs
6
Non-Final OAs
4
Final Rejections
1
Advisory / Quayle

Response Deadline Pressure

Based on the USPTO statutory response window for each pending office action. 2 of the docket's apps have a known mailing date; the rest are excluded from the tile counts.

2
Overdue
0
Due this week
0
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.

5
Hard (45%)
5
Medium (45%)
1
Easy (9%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§103 only4 (36%)
§112 only1 (9%)
Double-patenting + other1 (9%)
Multi-statute (no §101)5 (45%)

Industry Mix

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

10
Life Sciences
91% of docket
0
Information Tech
0% of docket
0
Communications
0% of docket
0
Semiconductors
0% of docket
1
Mechanical / Eng
9% 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.

110 h
Manual time on pending OAs
22 h
Time saved (low, 20%)
38 h
Time saved (mid, 35%)
1.0 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
KOSHY, JOPHY STEPHEN 3 63.8% +39.8%
LIANG, ANTHONY M 2 83.7% +9.2%
LA VILLA, MICHAEL EUGENE 1 75.7% +18.1%
FLORES, JAVIER 1 0.0% +0.0%
SU, XIAOWEI 1 71.9% +12.6%
TOLAN, EDWARD THOMAS 1 78.0% +16.0%
HILL, STEPHANI A 1 29.2% +44.0%
YANG, JIE 1 62.5% +19.4%

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
18726388 AUSTENITIC STAINLESS STEEL AND METHOD FOR PRODUCING AUSTENITIC STAINLESS STEEL LIANG, ANTHONY M —
18726393 AUSTENITIC STAINLESS STEEL AND METHOD FOR PRODUCING AUSTENITIC STAINLESS STEEL LIANG, ANTHONY M —

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
18032771 FERRITIC STAINLESS STEEL AND COMPONENT FOR EXHAUST GAS HILL, STEPHANI A 23d overdue
19110008 AUSTENITIC STAINLESS STEEL SHEET, METHOD FOR PRODUCING SAME, AND PART LA VILLA, MICHAEL EUGENE —
18843483 FERRITIC STAINLESS STEEL SHEET AND EXHAUST MEMBER FLORES, JAVIER —
18701784 FERRITIC STAINLESS STEEL AND METHOD FOR MANUFACTURING SAME SU, XIAOWEI —
18579709 DEVICE FOR PRODUCING OIL SUPPLY PIPE AND METHOD FOR PRODUCING OIL SUPPLY PIPE TOLAN, EDWARD THOMAS —
18037694 STAINLESS STEEL BAR MATERIAL AND ELECTROMAGNETIC COMPONENT KOSHY, JOPHY STEPHEN —

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
18032771 FERRITIC STAINLESS STEEL AND COMPONENT FOR EXHAUST GAS HILL, STEPHANI A 23d overdue
18281206 MARTENSITIC STAINLESS STEEL SHEET HAVING EXCELLENT CORROSION RESISTANCE AND METHOD FOR MANUFACTURING SAME, AND MARTENSITIC STAINLESS BLADED PRODUCT KOSHY, JOPHY STEPHEN 17d overdue
19110008 AUSTENITIC STAINLESS STEEL SHEET, METHOD FOR PRODUCING SAME, AND PART LA VILLA, MICHAEL EUGENE —
18701784 FERRITIC STAINLESS STEEL AND METHOD FOR MANUFACTURING SAME SU, XIAOWEI —
18579709 DEVICE FOR PRODUCING OIL SUPPLY PIPE AND METHOD FOR PRODUCING OIL SUPPLY PIPE TOLAN, EDWARD THOMAS —
18037694 STAINLESS STEEL BAR MATERIAL AND ELECTROMAGNETIC COMPONENT KOSHY, JOPHY STEPHEN —
18246620 MARTENSITE-BASED STAINLESS STEEL MATERIAL AND METHOD FOR PRODUCING SAME YANG, JIE —
17800924 STAINLESS STEEL FOR METAL FOILS, STAINLESS STEEL FOIL, AND METHODS FOR PRODUCING THEM KOSHY, JOPHY STEPHEN —

Top Art Units

Art UnitApps
1733 4
1734 3
1735 2
1784 1
3725 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
19110008 AUSTENITIC STAINLESS STEEL SHEET, METHOD FOR PRODUCING SAME, AND PART LA VILLA, MICHAEL EUGENE 1784 §103§112 Non-Final OA — Pending Mar 07, 2025
18843483 FERRITIC STAINLESS STEEL SHEET AND EXHAUST MEMBER FLORES, JAVIER 1735 §103§112 Non-Final OA — Pending Sep 03, 2024
18726388 AUSTENITIC STAINLESS STEEL AND METHOD FOR PRODUCING AUSTENITIC STAINLESS STEEL LIANG, ANTHONY M 1734 §112DP Non-Final OA — Pending Jul 02, 2024
18726393 AUSTENITIC STAINLESS STEEL AND METHOD FOR PRODUCING AUSTENITIC STAINLESS STEEL LIANG, ANTHONY M 1734 §112Other Non-Final OA — Pending Jul 02, 2024
18701784 FERRITIC STAINLESS STEEL AND METHOD FOR MANUFACTURING SAME SU, XIAOWEI 1733 §103§112 Non-Final OA — Pending Apr 16, 2024
18579709 DEVICE FOR PRODUCING OIL SUPPLY PIPE AND METHOD FOR PRODUCING OIL SUPPLY PIPE TOLAN, EDWARD THOMAS 3725 §103§112 Non-Final OA — Pending Jan 16, 2024
18281206 MARTENSITIC STAINLESS STEEL SHEET HAVING EXCELLENT CORROSION RESISTANCE AND METHOD FOR MANUFACTURING SAME, AND MARTENSITIC STAINLESS BLADED PRODUCT KOSHY, JOPHY STEPHEN 1733 §103 Final Rejection 17d overdue Pending Sep 08, 2023
18037694 STAINLESS STEEL BAR MATERIAL AND ELECTROMAGNETIC COMPONENT KOSHY, JOPHY STEPHEN 1733 §103§112 Final Rejection — Pending May 18, 2023
18032771 FERRITIC STAINLESS STEEL AND COMPONENT FOR EXHAUST GAS HILL, STEPHANI A 1735 §103 Final Rejection 23d overdue Pending Apr 19, 2023
18246620 MARTENSITE-BASED STAINLESS STEEL MATERIAL AND METHOD FOR PRODUCING SAME YANG, JIE 1734 §103 Non-Final OA — Pending Mar 24, 2023
17800924 STAINLESS STEEL FOR METAL FOILS, STAINLESS STEEL FOIL, AND METHODS FOR PRODUCING THEM KOSHY, JOPHY STEPHEN 1733 §103 Final Rejection — Pending Aug 19, 2022

Managing Nippon Steel Stainless Steel Corporation's Patent Portfolio?

IP Author helps IP teams respond to office actions faster with AI-generated responses, examiner analytics, and prosecution intelligence.

Start Free Trial

Frequently Asked Questions

How many pending USPTO office actions does Nippon Steel Stainless Steel Corporation have?

Nippon Steel Stainless Steel Corporation has 11 pending office actions as of October 2026, spread across 5 art units and 8 examiners.

Which USPTO examiner handles the most Nippon Steel Stainless Steel Corporation applications?

Jophy Stephen Koshy has the most, with 3 of Nippon Steel Stainless Steel Corporation's pending office actions.

What technology area are Nippon Steel Stainless Steel Corporation's patent applications in?

Mostly Chemistry & Materials (USPTO Tech Center 1700), based on where its pending office actions are examined.

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month