Prosecution Insights
Last updated: August 15, 2026

Celanese Polymers Holding Inc.

4 pending office actions • 3 art units • 4 examiners • 0 of 4 (0%) have an AI response strategy ready

Portfolio Summary

4
Total Pending OAs
2
Non-Final OAs
2
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.

1
Overdue
0
Due this week
0
Due this month
1
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.

1
Hard (25%)
2
Medium (50%)
1
Easy (25%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§103 only2 (50%)
§112 only1 (25%)
Multi-statute (no §101)1 (25%)

Industry Mix

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

4
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.

40 h
Manual time on pending OAs
8 h
Time saved (low, 20%)
14 h
Time saved (mid, 35%)
0.3 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
MATZEK, MATTHEW D 1 46.1% +37.0%
PIZIALI, ANDREW T 1 28.5% +27.4%
IMANI, ELIZABETH MARY COLE 1 33.3% +25.1%
USELDING, JOHN E 1 53.5% +17.6%

Hard Cases (2)

Multi-statute / §101-driven matters, or cases in front of an examiner with an allow rate under 30%. The top 2 ordered by deadline are shown.

App #TitleExaminerDue in
18646938 Thermoplastic Elastomer-Based Multifilament Yarn PIZIALI, ANDREW T 4d overdue
18647086 Thermoplastic Copolyester Elastomer-Based Yarn MATZEK, MATTHEW D

Interview Candidates (4)

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 4 ordered by deadline are shown.

App #TitleExaminerDue in
18646938 Thermoplastic Elastomer-Based Multifilament Yarn PIZIALI, ANDREW T 4d overdue
17271799 COPOLYETHERESTER FORMULATION WITH IMPROVED HEAT-STABILITY USELDING, JOHN E 42d
18647086 Thermoplastic Copolyester Elastomer-Based Yarn MATZEK, MATTHEW D
18646902 Thermoplastic Elastomer-Based Monofilament Yarn IMANI, ELIZABETH MARY COLE

Top Art Units

Art UnitApps
1789 2
1786 1
1763 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
18647086 Thermoplastic Copolyester Elastomer-Based Yarn MATZEK, MATTHEW D 1786 §102§103 Final Rejection Pending Apr 26, 2024
18646938 Thermoplastic Elastomer-Based Multifilament Yarn PIZIALI, ANDREW T 1789 §103 Final Rejection 4d overdue Pending Apr 26, 2024
18646902 Thermoplastic Elastomer-Based Monofilament Yarn IMANI, ELIZABETH MARY COLE 1789 §103 Non-Final OA Pending Apr 26, 2024
17271799 COPOLYETHERESTER FORMULATION WITH IMPROVED HEAT-STABILITY USELDING, JOHN E 1763 §112 Non-Final OA 42d Pending Feb 26, 2021

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