Prosecution Insights
Last updated: August 14, 2026

Celanese International Corporation

23 pending office actions • 11 art units • 17 examiners • 0 of 23 (0%) have an AI response strategy ready • 11 patents granted in the last 365 days

Portfolio Summary

23
Total Pending OAs
15
Non-Final OAs
7
Final Rejections
1
Advisory / Quayle

Response Deadline Pressure

Based on the USPTO statutory response window for each pending office action. 15 of the docket's apps have a known mailing date; the rest are excluded from the tile counts.

5
Overdue
1
Due this week
9
Due this month
0
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. 15 of the docket's apps have a known mailing date.

-30dToday30d60d90d120d
Overdue (5)Due ≤ 7 days (1)Due ≤ 30 days (9)

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 (30%)
11
Medium (48%)
3
Easy (13%)
2
Unknown (9%)

Rejection Statute Mix

BucketCases
§103 only6 (26%)
§102 only1 (4%)
§112 only2 (9%)
Double-patenting only1 (4%)
Double-patenting + other4 (17%)
Multi-statute (no §101)7 (30%)
No statute on record2 (9%)

Industry Mix

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

22
Life Sciences
96% 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
4% 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.

230 h
Manual time on pending OAs
46 h
Time saved (low, 20%)
80 h
Time saved (mid, 35%)
2.0 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
KOLB, KATARZYNA I 4 44.7% +16.3%
HABTE, KAHSAY 4 85.0% +7.4%
CABRAL, ROBERT S 1 62.6% +32.4%
CHIU, TAK LIANG 1 50.0% +34.3%
PEO, JONATHAN M 1 48.2% +48.1%
BELUNIS, THOMAS JAMES 1
VO, HAI 1 57.1% +72.3%
FISCHER, JUSTIN R 1 44.2% +2.3%
SCOTT, ANGELA C 1 62.5% +18.9%
COONEY, JOHN M 1 62.5% +21.2%

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
18335285 Acesulfame Potassium Compositions and Processes for Producing Same HABTE, KAHSAY 15d
18335296 Acesulfame Potassium Compositions and Processes for Producing Same HABTE, KAHSAY 20d

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
17783259 ROOFING TILE COATING COMPOSITIONS RIETH, STEPHEN EDWARD 42d overdue
18297319 Cellulose Ester Composition With Improved Transparency and Articles Made Therefrom PEPITONE, MICHAEL F 31d overdue
18500437 FUNCTIONALIZED POROUS COMPOSITES CONTAINING CHEMICAL SCAVENGERS VO, HAI 30d overdue
17435298 USE OF AQUEOUS COPOLYMER DISPERSIONS IN PRESERVATIVE-FREE AQUEOUS COATING COMPOSITIONS NERANGIS, VICKEY M 5d
18335662 Cellulose Ester Polymer Product With Increased Melt Flow Properties and Reflectance KOLB, KATARZYNA I 9d
18431505 Porous Polymer Product For Removing Contaminants From A Fluid Stream CHIU, TAK LIANG
18250896 Microporous Membrane With Enhanced Electrolyte Wettability COONEY, JOHN M

Interview Candidates (10)

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
18500437 FUNCTIONALIZED POROUS COMPOSITES CONTAINING CHEMICAL SCAVENGERS VO, HAI 30d overdue
18312134 Fiber Reinforced Thermoplastic Polymer Composition With Flame Retardant Properties KOLB, KATARZYNA I 4d overdue
18335662 Cellulose Ester Polymer Product With Increased Melt Flow Properties and Reflectance KOLB, KATARZYNA I 9d
18356569 Composition Containing Cellulose Ester Polymer With Enhanced Melt Strength Agent KOLB, KATARZYNA I 13d
18494139 Fiber Reinforced Thermoplastic Polymer Composition Containing Flame Retardant Package KOLB, KATARZYNA I 14d
18500482 Process and Device for Removing Contaminants from a Fluid Stream PEO, JONATHAN M 20d
18356557 Bio-Based Polymer Composition Containing Odor Masking Agent SCOTT, ANGELA C 28d
18624492 Injection Molded Medical Devices Made From A High Molecular Weight Polyethylene CABRAL, ROBERT S

Top Art Units

Art UnitApps
1767 7
1624 4
1763 3
1614 1
1777 1
1779 1
1788 1
1749 1
1765 1
1759 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
18624492 Injection Molded Medical Devices Made From A High Molecular Weight Polyethylene CABRAL, ROBERT S 1614 DP Non-Final OA Pending Apr 02, 2024
18431505 Porous Polymer Product For Removing Contaminants From A Fluid Stream CHIU, TAK LIANG 1777 §102§103§112 Non-Final OA Pending Feb 02, 2024
18500482 Process and Device for Removing Contaminants from a Fluid Stream PEO, JONATHAN M 1779 §102 Non-Final OA 20d Pending Nov 02, 2023
18500405 FUNCTIONALIZED POROUS COMPOSITES BELUNIS, THOMAS JAMES §102§103§112DP Non-Final OA Pending Nov 02, 2023
18500437 FUNCTIONALIZED POROUS COMPOSITES CONTAINING CHEMICAL SCAVENGERS VO, HAI 1788 §102§103§112Other Non-Final OA 30d overdue Pending Nov 02, 2023
18494139 Fiber Reinforced Thermoplastic Polymer Composition Containing Flame Retardant Package KOLB, KATARZYNA I 1767 §102§103DP Final Rejection 14d Pending Oct 25, 2023
18358523 Gel Extruded Articles With Molecular Weight Retention FISCHER, JUSTIN R 1749 §103 Final Rejection Pending Jul 25, 2023
18356557 Bio-Based Polymer Composition Containing Odor Masking Agent SCOTT, ANGELA C 1767 §103 Non-Final OA 28d Pending Jul 21, 2023
18356569 Composition Containing Cellulose Ester Polymer With Enhanced Melt Strength Agent KOLB, KATARZYNA I 1767 §103 Non-Final OA 13d Pending Jul 21, 2023
18335325 Acesulfame Potassium Compositions and Processes for Producing Same HABTE, KAHSAY 1624 Other Final Rejection 22d Pending Jun 15, 2023
18335662 Cellulose Ester Polymer Product With Increased Melt Flow Properties and Reflectance KOLB, KATARZYNA I 1767 §102§103Other Non-Final OA 9d Pending Jun 15, 2023
18335345 Acesulfame Potassium Compositions and Processes for Producing Same HABTE, KAHSAY 1624 Other Final Rejection 22d Pending Jun 15, 2023
18335285 Acesulfame Potassium Compositions and Processes for Producing Same HABTE, KAHSAY 1624 §112Other Final Rejection 15d Pending Jun 15, 2023
18335296 Acesulfame Potassium Compositions and Processes for Producing Same HABTE, KAHSAY 1624 §112Other Final Rejection 20d Pending Jun 15, 2023
18312134 Fiber Reinforced Thermoplastic Polymer Composition With Flame Retardant Properties KOLB, KATARZYNA I 1767 §102§103DP Non-Final OA 4d overdue Pending May 04, 2023
18250896 Microporous Membrane With Enhanced Electrolyte Wettability COONEY, JOHN M 1765 §102§103§112 Non-Final OA Pending Apr 27, 2023
18297319 Cellulose Ester Composition With Improved Transparency and Articles Made Therefrom PEPITONE, MICHAEL F 1767 §102§103§112Other Non-Final OA 31d overdue Pending Apr 07, 2023
18079484 Flame Retardant Thermoplastic Polymer Composition USELDING, JOHN E 1763 §103§112DPOther Non-Final OA Pending Dec 12, 2022
17783259 ROOFING TILE COATING COMPOSITIONS RIETH, STEPHEN EDWARD 1759 §103§112 Non-Final OA 42d overdue Pending Jun 07, 2022
17701008 Thermoformed Articles Made From Bio-Based Polymers and Compositions Therefore HANDVILLE, BRIAN 1783 §103 Non-Final OA 2d overdue Pending Mar 22, 2022
17442363 Method for Improving UV Weatherability of Thermoplastic Vulcanizates EASHOO, MARK 1767 §103 Final Rejection Pending Sep 23, 2021
17473456 WOOD STAINS AND PENETRATION PRIMERS COMPRISING LOW VOC LEVEL AQUEOUS DISPERSIONS CAI, WENWEN 1763 §103 Non-Final OA Pending Sep 13, 2021
17435298 USE OF AQUEOUS COPOLYMER DISPERSIONS IN PRESERVATIVE-FREE AQUEOUS COATING COMPOSITIONS NERANGIS, VICKEY M 1763 §103§112 Non-Final OA 5d Pending Aug 31, 2021

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