Technology area: Chemistry & Materials
17 pending office actions • 13 art units • 16 examiners • 0 of 17 (0%) have an AI response strategy ready • 11 patents granted in the last 365 days
Celanese International Corporation has 18 pending office actions in Chemistry & Materials. The matters span 17 examiners and 13 art units, reflecting a large and widely distributed prosecution workload.
KOLB, KATARZYNA I is the busiest examiner, with 2 pending matters. The examiner count nearly tracks the action count, so most matters require individualized review. The art-unit distribution also calls for coordination across technical assignments, especially where claim strategy or supporting disclosures overlap.
Based on the USPTO statutory response window for each pending office action. 5 of the docket's apps have a known mailing date; the rest are excluded from the tile counts.
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. 5 of the docket's apps have a known mailing date.
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.
| Bucket | Cases |
|---|---|
| §103 only | 9 (53%) |
| Double-patenting + other | 1 (6%) |
| Multi-statute (no §101) | 7 (41%) |
How the docket's pending cases split across USPTO tech-center bands.
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.
| Examiner | Apps on this docket | Allow rate | Interview lift |
|---|---|---|---|
| KOLB, KATARZYNA I | 2 | 45.3% | +17.2% |
| REDDY, KARUNA P | 1 | 42.6% | +10.4% |
| CHIU, TAK LIANG | 1 | 45.5% | +24.6% |
| RODD, CHRISTOPHER M | 1 | 72.7% | +11.8% |
| RIPA, BRYAN D | 1 | 54.3% | +36.7% |
| CHEN, VIVIAN | 1 | 56.6% | +28.5% |
| KEELING, ALEXANDER W | 1 | 56.0% | +37.9% |
| BELUNIS, THOMAS JAMES | 1 | — | — |
| BLEDSOE, JOSHUA CALEB | 1 | 43.9% | +45.8% |
| DU, SURBHI M | 1 | 66.9% | +29.1% |
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 # | Title | Examiner | Due in |
|---|---|---|---|
| 18335662 | Cellulose Ester Polymer Product With Increased Melt Flow Properties and Reflectance | KOLB, KATARZYNA I | 9d |
| 18641511 | Thermoplastic Vulcanizates Having Lower Carbon Footprint | REDDY, KARUNA P | — |
| 18431505 | Porous Polymer Product For Removing Contaminants From A Fluid Stream | CHIU, TAK LIANG | — |
| 18406604 | Polymer Articles For A Coolant Fluid Circuit in Electric Vehicles | RODD, CHRISTOPHER M | — |
| 18399296 | Thermoplastic Vulcanizate Gasket for Use in an Electrolyzer | RIPA, BRYAN D | — |
| 18549070 | ADHESIVES FOR FILM LAMINATION AND PRODUCTS MADE THEREFROM | DU, SURBHI M | — |
| 17972998 | Sustainable High Density Polyethylene and Process For Making Same | MENON, KRISHNAN S | — |
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 # | Title | Examiner | Due in |
|---|---|---|---|
| 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 |
| 18641511 | Thermoplastic Vulcanizates Having Lower Carbon Footprint | REDDY, KARUNA P | — |
| 18431505 | Porous Polymer Product For Removing Contaminants From A Fluid Stream | CHIU, TAK LIANG | — |
| 18406604 | Polymer Articles For A Coolant Fluid Circuit in Electric Vehicles | RODD, CHRISTOPHER M | — |
| 18399296 | Thermoplastic Vulcanizate Gasket for Use in an Electrolyzer | RIPA, BRYAN D | — |
| 18545088 | Multi-Layer Film With Heat Seal Properties | CHEN, VIVIAN | — |
| 18500579 | Electrolysis Film | KEELING, ALEXANDER W | — |
| Art Unit | Apps |
|---|---|
| 1767 | 4 |
| 1777 | 2 |
| 1764 | 1 |
| 1766 | 1 |
| 1794 | 1 |
| 1787 | 1 |
| 1795 | 1 |
| 1762 | 1 |
| 1765 | 1 |
| 1749 | 1 |
| App # | Title | Examiner | Art Unit | Statutes | Status | Due in | AI | Filed |
|---|---|---|---|---|---|---|---|---|
| 18641511 | Thermoplastic Vulcanizates Having Lower Carbon Footprint | REDDY, KARUNA P | 1764 | §102§103 | Non-Final OA | — | Pending | Apr 22, 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 |
| 18406604 | Polymer Articles For A Coolant Fluid Circuit in Electric Vehicles | RODD, CHRISTOPHER M | 1766 | §103§112 | Non-Final OA | — | Pending | Jan 08, 2024 |
| 18399296 | Thermoplastic Vulcanizate Gasket for Use in an Electrolyzer | RIPA, BRYAN D | 1794 | §103§112 | Non-Final OA | — | Pending | Dec 28, 2023 |
| 18545088 | Multi-Layer Film With Heat Seal Properties | CHEN, VIVIAN | 1787 | §103 | Non-Final OA | — | Pending | Dec 19, 2023 |
| 18500579 | Electrolysis Film | KEELING, ALEXANDER W | 1795 | §103 | Final Rejection | — | Pending | Nov 02, 2023 |
| 18500405 | FUNCTIONALIZED POROUS COMPOSITES | BELUNIS, THOMAS JAMES | 1767 | §102§103§112DP | Non-Final OA | — | Pending | Nov 02, 2023 |
| 18479237 | Low Emission Polyoxymethylene Composition With Color Stability | BLEDSOE, JOSHUA CALEB | 1762 | §103 | Final Rejection | — | Pending | Oct 02, 2023 |
| 18549070 | ADHESIVES FOR FILM LAMINATION AND PRODUCTS MADE THEREFROM | DU, SURBHI M | 1765 | §103§112 | Final Rejection | — | Pending | Sep 05, 2023 |
| 18358523 | Gel Extruded Articles With Molecular Weight Retention | FISCHER, JUSTIN R | 1749 | §103 | Non-Final OA | — | Pending | Jul 25, 2023 |
| 18356557 | Bio-Based Polymer Composition Containing Odor Masking Agent | EASHOO, MARK | 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 |
| 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 |
| 17928565 | PROCESS FOR ACETIC ACID PRODUCTION BY REMOVING PERMANGANATE REDUCING COMPOUNDS | BAHTA, MEDHANIT W | 1692 | §103 | Non-Final OA | 18d overdue | Pending | Nov 29, 2022 |
| 17972998 | Sustainable High Density Polyethylene and Process For Making Same | MENON, KRISHNAN S | 1777 | §102§103 | Non-Final OA | — | Pending | Oct 25, 2022 |
| 17783259 | ROOFING TILE COATING COMPOSITIONS | RIETH, STEPHEN EDWARD | 1759 | §103 | Final Rejection | 42d overdue | Pending | Jun 07, 2022 |
| 17473456 | WOOD STAINS AND PENETRATION PRIMERS COMPRISING LOW VOC LEVEL AQUEOUS DISPERSIONS | CAI, WENWEN | 1763 | §103 | Non-Final OA | — | Pending | Sep 13, 2021 |
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Start Free TrialCelanese International Corporation has 17 pending office actions as of October 2026, spread across 13 art units and 16 examiners.
Katarzyna I Kolb has the most, with 2 of Celanese International Corporation's pending office actions.
Mostly Chemistry & Materials (USPTO Tech Center 1700), based on where its pending office actions are examined.
