Prosecution Insights
Last updated: October 25, 2026

Nova Chemicals (International) S.A.

Technology area: Chemistry & Materials

13 pending office actions • 10 art units • 12 examiners • 0 of 13 (0%) have an AI response strategy ready • 36 patents granted in the last 365 days

Analysis

Nova Chemicals (International) S.A. has 14 pending office actions in Chemistry & Materials. The docket spans 13 examiners and 10 art units, reflecting a broad prosecution operation with assignments distributed across multiple technical examination groups.

LEUNG, JENNIFER A is the busiest examiner, with 2 pending matters. No single examiner accounts for most of the listed work, so centralized docket control should be paired with examiner-specific response development.

The art-unit spread makes classification-based review useful for identifying recurring claim, written-description, or prior-art issues. Even where portfolio themes overlap, the examiner distribution supports treating each office action as an individual prosecution event.

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

Portfolio Summary

13
Total Pending OAs
7
Non-Final OAs
5
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.

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.

7
Hard (54%)
5
Medium (38%)
1
Easy (8%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§103 only4 (31%)
§112 only1 (8%)
Double-patenting + other1 (8%)
Multi-statute (no §101)7 (54%)

Industry Mix

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

13
Life Sciences
100% of docket
0
Information Tech
0% of docket
0
Communications
0% of docket
0
Semiconductors
0% of docket
0
Mechanical / Eng
0% 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.

130 h
Manual time on pending OAs
26 h
Time saved (low, 20%)
46 h
Time saved (mid, 35%)
1.1 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
LEUNG, JENNIFER A 2 61.8% +12.2%
CAMPANELL, FRANCIS C 1 73.0% +9.5%
CHONG, JASON Y 1 73.3% +18.1%
ZACHARIA, RAMSEY E 1 78.4% +28.7%
NGUYEN, TAM M 1 77.1% +11.7%
BOSS, WENDY LYNN 1 76.7% +15.0%
BUIE-HATCHER, NICOLE M 1 63.9% +27.0%
DOLETSKI, BLAINE G 1 75.1% +9.0%
LENIHAN, JEFFREY S 1 73.0% +17.0%
KESSLER JR, THOMAS JOSEPH 1 46.2% +46.6%

Hard Cases (7)

Multi-statute / §101-driven matters, or cases in front of an examiner with an allow rate under 30%. The top 7 ordered by deadline are shown.

App #TitleExaminerDue in
18279670 RECYCLABLE PACKAGE WITH FITMENT KESSLER JR, THOMAS JOSEPH 12d
18787382 STEAM GENERATION IN OXIDATIVE DEHYDROGENATION NGUYEN, TAM M —
18288751 INTEGRATION FOR PROCESSING EFFLUENT OF OXIDATIVE DEHYDROGENATION (ODH) REACTOR DOLETSKI, BLAINE G —
18550477 HIGH DENSITY POLYETHYLENE COMPOSITION LENIHAN, JEFFREY S —
18546109 PLASTOMERS WITH RAPID CRYSTALLIZATION RATES DU, SURBHI M —
18030329 FIXED BED REACTOR SYSTEM FOR OXIDATIVE DEHYDROGENATION OF ETHANE LEUNG, JENNIFER A —
18030164 HIGH TEMPERATURE AIR SEPARATION MODULE FOR AN ODH COMPLEX LEUNG, JENNIFER A —

Interview Candidates (9)

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
18279670 RECYCLABLE PACKAGE WITH FITMENT KESSLER JR, THOMAS JOSEPH 12d
18714748 ALL-PE RECYCLABLE LAMINATE WITH NANOCLAY COATING BOSS, WENDY LYNN 61d
18861336 REACTOR SYSTEMS FOR OXIDATIVE DEHYDROGENATION (ODH) OF ETHANE CHONG, JASON Y —
18898041 FILMS FROM RECYCLED POLYETHYLENE ZACHARIA, RAMSEY E —
18787382 STEAM GENERATION IN OXIDATIVE DEHYDROGENATION NGUYEN, TAM M —
18690315 OLEFIN POLYMERIZATION CATALYST SYSTEM AND POLYMERIZATION PROCESS BUIE-HATCHER, NICOLE M —
18550477 HIGH DENSITY POLYETHYLENE COMPOSITION LENIHAN, JEFFREY S —
18030329 FIXED BED REACTOR SYSTEM FOR OXIDATIVE DEHYDROGENATION OF ETHANE LEUNG, JENNIFER A —

Top Art Units

Art UnitApps
1771 2
1765 2
1774 2
1772 1
1787 1
1749 1
1725 1
1692 1
1782 1
1736 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
18862788 REACTOR SYSTEMS FOR OXIDATIVE DEHYDROGENATION (ODH) OF ETHANE CAMPANELL, FRANCIS C 1771 §103Other Non-Final OA — Pending Nov 04, 2024
18861336 REACTOR SYSTEMS FOR OXIDATIVE DEHYDROGENATION (ODH) OF ETHANE CHONG, JASON Y 1772 §103DP Non-Final OA — Pending Oct 29, 2024
18898041 FILMS FROM RECYCLED POLYETHYLENE ZACHARIA, RAMSEY E 1787 §112 Final Rejection — Pending Sep 26, 2024
18787382 STEAM GENERATION IN OXIDATIVE DEHYDROGENATION NGUYEN, TAM M 1771 §103§112 Non-Final OA — Pending Jul 29, 2024
18714748 ALL-PE RECYCLABLE LAMINATE WITH NANOCLAY COATING BOSS, WENDY LYNN 1749 §103 Final Rejection 61d Pending May 30, 2024
18690315 OLEFIN POLYMERIZATION CATALYST SYSTEM AND POLYMERIZATION PROCESS BUIE-HATCHER, NICOLE M 1725 §103 Non-Final OA — Pending Mar 08, 2024
18288751 INTEGRATION FOR PROCESSING EFFLUENT OF OXIDATIVE DEHYDROGENATION (ODH) REACTOR DOLETSKI, BLAINE G 1692 §102§103§112 Non-Final OA — Pending Oct 27, 2023
18550477 HIGH DENSITY POLYETHYLENE COMPOSITION LENIHAN, JEFFREY S 1765 §103§112 Final Rejection — Pending Sep 14, 2023
18279670 RECYCLABLE PACKAGE WITH FITMENT KESSLER JR, THOMAS JOSEPH 1782 §103§112 Non-Final OA 12d Pending Aug 31, 2023
18278972 CATALYST MATERIALS WITH TUNABLE ACTIVITY SHERMAN, ERIC SCOTT 1736 §103 Final Rejection — Pending Aug 25, 2023
18546109 PLASTOMERS WITH RAPID CRYSTALLIZATION RATES DU, SURBHI M 1765 §102§103 Final Rejection — Pending Aug 11, 2023
18030329 FIXED BED REACTOR SYSTEM FOR OXIDATIVE DEHYDROGENATION OF ETHANE LEUNG, JENNIFER A 1774 §102§103§112 Non-Final OA — Pending Apr 05, 2023
18030164 HIGH TEMPERATURE AIR SEPARATION MODULE FOR AN ODH COMPLEX LEUNG, JENNIFER A 1774 §103§112 Non-Final OA — Pending Apr 04, 2023

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Frequently Asked Questions

How many pending USPTO office actions does Nova Chemicals (International) S.A. have?

Nova Chemicals (International) S.A. has 13 pending office actions as of October 2026, spread across 10 art units and 12 examiners.

Which USPTO examiner handles the most Nova Chemicals (International) S.A. applications?

Jennifer A Leung has the most, with 2 of Nova Chemicals (International) S.A.'s pending office actions.

What technology area are Nova Chemicals (International) S.A.'s patent applications in?

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

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