Prosecution Insights
Last updated: October 27, 2026

Johnson Matthey plc

Technology area: Chemistry & Materials

20 pending office actions • 9 art units • 16 examiners • 0 of 20 (0%) have an AI response strategy ready • 36 patents granted in the last 365 days

Analysis

Johnson Matthey plc has 21 pending office actions in Chemistry & Materials. The portfolio spans 17 distinct examiners and 10 distinct art units, indicating broad prosecution activity with repeated examiner and art-unit assignments. The distribution calls for coordination across matters without assuming that every objection reflects the same technical or procedural context.

DAVIS, SHENG HAN is the busiest examiner, with 3 pending matters. Those matters provide a defined cluster for checking recurring claim interpretation, restriction treatment, and amendment effects. The wider examiner and art-unit distribution makes a portfolio-wide record of positions useful for maintaining consistent prosecution objectives.

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

Portfolio Summary

20
Total Pending OAs
10
Non-Final OAs
10
Final Rejections
0
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.

0
Overdue
0
Due this week
3
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
Due ≤ 30 days (3)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.

5
Hard (25%)
14
Medium (70%)
1
Easy (5%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§103 only11 (55%)
§102 only1 (5%)
§112 only1 (5%)
Double-patenting + other2 (10%)
Multi-statute (no §101)5 (25%)

Industry Mix

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

18
Life Sciences
90% of docket
0
Information Tech
0% of docket
0
Communications
0% of docket
0
Semiconductors
0% of docket
1
Mechanical / Eng
5% of docket
1
Business / Other
5% 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.

200 h
Manual time on pending OAs
40 h
Time saved (low, 20%)
70 h
Time saved (mid, 35%)
1.8 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
DAVIS, SHENG HAN 3 66.3% +33.1%
LI, JUN 2 54.5% +57.0%
LALISSE, REMY FREDERIC 2 77.8% +0.0%
BIDWELL, JAMES R 1 89.7% +8.3%
KURTZ, BENJAMIN M 1 56.7% +17.7%
ZHANG, KELING NMN 1 66.8% +17.6%
HAVLIN, ROBERT H 1 51.3% +28.3%
QUIST, NICOLE LEE 1 89.7% +13.3%
TALBOT, BRIAN K 1 59.2% +30.9%
PATEL, SMITA S 1 70.3% +57.3%

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
17998103 PROCESS FOR THE PRODUCTION OF HYDROGEN QUIST, NICOLE LEE 54d
19104314 METHODS AND APPARATUS FOR CONTROLLED DISCHARGE OF COMPONENTS FROM A TUBE BIDWELL, JAMES R —

Hard Cases (5)

Multi-statute / §101-driven matters, or cases in front of an examiner with an allow rate under 30%. The top 5 ordered by deadline are shown.

App #TitleExaminerDue in
18263661 ACTIVATION OF REDUCED AND PASSIVATED CATALYST ZHANG, KELING NMN 12d
18910065 METHOD OF COATING A CATALYST ON FLAT OR TEXTURED SUBSTRATES TALBOT, BRIAN K 20d
18409927 CATALYST COMPOSITION DAVIS, SHENG HAN —
18495782 COATINGS ON A MONOLITH ARTICLE BERNS, DANIEL J —
18314280 TIN CO-DOPED MIXED OXIDES FOR USE IN THREE WAY CATALYSIS LALISSE, REMY FREDERIC —

Interview Candidates (11)

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
18263661 ACTIVATION OF REDUCED AND PASSIVATED CATALYST ZHANG, KELING NMN 12d
18910065 METHOD OF COATING A CATALYST ON FLAT OR TEXTURED SUBSTRATES TALBOT, BRIAN K 20d
17998103 PROCESS FOR THE PRODUCTION OF HYDROGEN QUIST, NICOLE LEE 54d
18839248 STABILISED ZINC OXIDE MATERIALS KURTZ, BENJAMIN M —
18710046 LOW-CARBON HYDROGEN PROCESS LI, JUN —
18006681 PROCESS FOR PRODUCING A GAS STREAM COMPRISING CARBON MONOXIDE HAVLIN, ROBERT H —
17891093 SYSTEMS AND METHODS FOR WET AIR OXIDATION REGENERATION OF CATALYSTS LI, JUN —
18437280 SCR CATALYST ARTICLE AND SYSTEMS FOR REDUCING N2O IN EXHAUST GAS PATEL, SMITA S —

Top Art Units

Art UnitApps
1732 9
1736 3
3651 1
1626 1
1738 1
1712 1
1772 1
1735 1
1725 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
19104314 METHODS AND APPARATUS FOR CONTROLLED DISCHARGE OF COMPONENTS FROM A TUBE BIDWELL, JAMES R 3651 §102 Non-Final OA — Pending Feb 17, 2025
18839248 STABILISED ZINC OXIDE MATERIALS KURTZ, BENJAMIN M — §103 Non-Final OA — Pending Aug 16, 2024
18710046 LOW-CARBON HYDROGEN PROCESS LI, JUN 1732 §103 Non-Final OA — Pending May 14, 2024
18263661 ACTIVATION OF REDUCED AND PASSIVATED CATALYST ZHANG, KELING NMN 1732 §102§103 Final Rejection 12d Pending Jul 31, 2023
18006681 PROCESS FOR PRODUCING A GAS STREAM COMPRISING CARBON MONOXIDE HAVLIN, ROBERT H 1626 §103 Final Rejection — Pending Jan 24, 2023
17998103 PROCESS FOR THE PRODUCTION OF HYDROGEN QUIST, NICOLE LEE 1738 §103Other Final Rejection 54d Pending Nov 07, 2022
17891093 SYSTEMS AND METHODS FOR WET AIR OXIDATION REGENERATION OF CATALYSTS LI, JUN 1732 §103DP Non-Final OA — Pending Aug 18, 2022
18910065 METHOD OF COATING A CATALYST ON FLAT OR TEXTURED SUBSTRATES TALBOT, BRIAN K 1712 §103§112 Final Rejection 20d Pending Oct 09, 2024
18437280 SCR CATALYST ARTICLE AND SYSTEMS FOR REDUCING N2O IN EXHAUST GAS PATEL, SMITA S 1732 §103 Non-Final OA — Pending Feb 09, 2024
18429460 CATALYST ARTICLE HAVING HIGH LOCAL RHODIUM CONCENTRATION MCCAIG, BRIAN A 1772 §112 Final Rejection — Pending Feb 01, 2024
18411090 COATINGS ON A MONOLITH ARTICLE BAUM, ZACHARY JOHN 1736 §102§103§112DP Non-Final OA — Pending Jan 12, 2024
18409927 CATALYST COMPOSITION DAVIS, SHENG HAN 1732 §102§103§112 Non-Final OA — Pending Jan 11, 2024
18495782 COATINGS ON A MONOLITH ARTICLE BERNS, DANIEL J 1736 §102§103§112 Non-Final OA — Pending Oct 27, 2023
18355425 SULPHUR TOLERANCE IN Cu-SCR CATALYSTS SIMKINS, SLONE ELIZABETH 1735 §103 Non-Final OA — Pending Jul 20, 2023
18315892 ZONED TWC CATALYSTS FOR GASOLINE ENGINE EXHAUST GAS TREATMENTS LALISSE, REMY FREDERIC 1732 §103 Final Rejection — Pending May 11, 2023
18314280 TIN CO-DOPED MIXED OXIDES FOR USE IN THREE WAY CATALYSIS LALISSE, REMY FREDERIC 1732 §103§112 Non-Final OA — Pending May 09, 2023
18067932 COMPRESSED NATURAL GAS COMBUSTION AND EXHAUST SYSTEM DAVIS, SHENG HAN 1732 §103 Final Rejection — Pending Dec 19, 2022
18050067 CATALYSTS FOR GASOLINE EXHAUST GAS TREATMENTS WITH IMPROVED AMMONIA EMISSION CONTROL DAVIS, SHENG HAN 1732 §103 Final Rejection — Pending Oct 27, 2022
18049371 POLYMALEIC ACID ASSISTED METAL NANOPARTICLE SYNTHESIS FOR THREE-WAY CATALYSIS APPLICATION LACLAIR, LOGAN EDWARD 1736 §103 Final Rejection — Pending Oct 25, 2022
17998594 ELECTROCHEMICAL CELL OTERO, KENNETH MAX 1725 §103 Final Rejection 14d Pending Nov 11, 2022

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Frequently Asked Questions

How many pending USPTO office actions does Johnson Matthey plc have?

Johnson Matthey plc has 20 pending office actions as of October 2026, spread across 9 art units and 16 examiners.

Which USPTO examiner handles the most Johnson Matthey plc applications?

Sheng Han Davis has the most, with 3 of Johnson Matthey plc's pending office actions.

What technology area are Johnson Matthey plc's patent applications in?

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

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