Prosecution Insights
Last updated: October 26, 2026

Clariant International Ltd.

Technology areas: Biotechnology & Pharmaceuticals • Chemistry & Materials

11 pending office actions • 9 art units • 11 examiners • 0 of 11 (0%) have an AI response strategy ready • 13 patents granted in the last 365 days

Analysis

Clariant International Ltd. has 13 pending office actions in Chemistry & Materials. The matters involve 13 examiners and 10 art units, showing broad examiner distribution with some concentration by technical examination group.

SCHLIENTZ, NATHAN W is the busiest examiner, with 1 pending matter. No examiner carries a larger share, so docket oversight should prioritize technology and art-unit coordination.

The separation between examiner and art-unit coverage suggests that common technical issues may recur across different examiner assignments. Counsel can coordinate claim positions at the art-unit level while preserving response flexibility for individual matters.

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

Portfolio Summary

11
Total Pending OAs
8
Non-Final OAs
3
Final Rejections
0
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.

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

9
Hard (82%)
2
Medium (18%)
0
Easy (0%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§101 + other3 (27%)
§103 only2 (18%)
Multi-statute (no §101)6 (55%)

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
0
Mechanical / Eng
0% of docket
1
Business / Other
9% 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
SCHLIENTZ, NATHAN W 1 41.3% -18.8%
PO, MING CHEUNG 1 37.7% +13.8%
HINES, LATOSHA D 1 51.4% +21.6%
MILLER, DALE R 1 62.5% +17.6%
SPAINE, ROBERT FRANKLIN 1 75.0% +0.0%
NGUYEN, HA S 1 58.5% -20.7%
REUTHER, ARRIE L 1 70.2% +12.3%
FADHEL, ALI Z 1 76.8% +8.7%
KUMAR, SRILAKSHMI K 1 49.8% +15.4%
STEINKE, SEAN JAMES 1 12.5% +42.9%

Hard Cases (9)

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
18688795 Prunella vulgaris extract and use thereof SPAINE, ROBERT FRANKLIN 84d
19064820 FATTY ACID DERIVATIVES FOR USE AS HERBICIDES SCHLIENTZ, NATHAN W —
18895632 Synergistic Blends Of Anti-Agglomerant Gas Hydrate Inhibitors With Quaternary Alkyl Ammonium Compounds PO, MING CHEUNG —
18718546 SHELL CATALYST FOR PRODUCING ALKENYL CARBOXYLIC ACID ESTERS HAVING AN IMPROVED PD AND AU DISTRIBUTION HINES, LATOSHA D —
18715756 COMPOSITION COMPRISING GALACTINOL AND USE THEREOF MILLER, DALE R —
18392095 Catalyst Composition For A Polyester Manufacturing Process NGUYEN, HA S —
18549584 Process and System for Preparing a Target Compound FADHEL, ALI Z —
18200036 WATER-GAS SHIFT REACTION CATALYSTS KUMAR, SRILAKSHMI K —

Interview Candidates (6)

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 6 ordered by deadline are shown.

App #TitleExaminerDue in
18895632 Synergistic Blends Of Anti-Agglomerant Gas Hydrate Inhibitors With Quaternary Alkyl Ammonium Compounds PO, MING CHEUNG —
18718546 SHELL CATALYST FOR PRODUCING ALKENYL CARBOXYLIC ACID ESTERS HAVING AN IMPROVED PD AND AU DISTRIBUTION HINES, LATOSHA D —
18715756 COMPOSITION COMPRISING GALACTINOL AND USE THEREOF MILLER, DALE R —
18562248 Universal Dispersant For Inorganic And Organic Pigments REUTHER, ARRIE L —
18200036 WATER-GAS SHIFT REACTION CATALYSTS KUMAR, SRILAKSHMI K —
18032856 Opacifier Compositions STEINKE, SEAN JAMES —

Top Art Units

Art UnitApps
1692 2
1616 1
1771 1
1655 1
1766 1
1764 1
1738 1
1619 1
1765 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
19064820 FATTY ACID DERIVATIVES FOR USE AS HERBICIDES SCHLIENTZ, NATHAN W 1616 §102§103 Non-Final OA — Pending Feb 27, 2025
18895632 Synergistic Blends Of Anti-Agglomerant Gas Hydrate Inhibitors With Quaternary Alkyl Ammonium Compounds PO, MING CHEUNG 1771 §101§103 Non-Final OA — Pending Sep 25, 2024
18718546 SHELL CATALYST FOR PRODUCING ALKENYL CARBOXYLIC ACID ESTERS HAVING AN IMPROVED PD AND AU DISTRIBUTION HINES, LATOSHA D 1692 §102§103§112 Non-Final OA — Pending Jun 11, 2024
18715756 COMPOSITION COMPRISING GALACTINOL AND USE THEREOF MILLER, DALE R — §101§103§112 Non-Final OA — Pending Jun 03, 2024
18688795 Prunella vulgaris extract and use thereof SPAINE, ROBERT FRANKLIN 1655 §101§103§112 Non-Final OA 84d Pending Mar 04, 2024
18392095 Catalyst Composition For A Polyester Manufacturing Process NGUYEN, HA S 1766 §102§103 Non-Final OA — Pending Dec 21, 2023
18562248 Universal Dispersant For Inorganic And Organic Pigments REUTHER, ARRIE L 1764 §103 Final Rejection — Pending Nov 17, 2023
18549584 Process and System for Preparing a Target Compound FADHEL, ALI Z 1692 §103§112 Non-Final OA — Pending Sep 07, 2023
18200036 WATER-GAS SHIFT REACTION CATALYSTS KUMAR, SRILAKSHMI K 1738 §103§112 Final Rejection — Pending May 22, 2023
18032856 Opacifier Compositions STEINKE, SEAN JAMES 1619 §103§112 Non-Final OA — Pending Apr 20, 2023
18032474 Process For Preparing Polyether Alcohols Having A Low Metal Ion Content DU, SURBHI M 1765 §103 Final Rejection 30d Pending Apr 18, 2023

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Frequently Asked Questions

How many pending USPTO office actions does Clariant International Ltd. have?

Clariant International Ltd. has 11 pending office actions as of October 2026, spread across 9 art units and 11 examiners.

Which USPTO examiner handles the most Clariant International Ltd. applications?

Nathan W Schlientz has the most, with 1 of Clariant International Ltd.'s pending office actions.

What technology area are Clariant International Ltd.'s patent applications in?

Mostly Biotechnology & Pharmaceuticals (USPTO Tech Center 1600), based on where its pending office actions are examined.

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