Prosecution Insights
Last updated: October 25, 2026

DuPont de Nemours Inc.

Technology area: Chemistry & Materials

27 pending office actions • 16 art units • 22 examiners • 0 of 27 (0%) have an AI response strategy ready • 66 patents granted in the last 365 days

Analysis

DuPont de Nemours Inc. has 32 pending office actions in Chemistry & Materials. The docket spans 26 examiners and 18 art units, indicating broad distribution across both examination personnel and technical units.

REDDY, KARUNA P is the busiest examiner, with 4 pending matters. That examiner carries a meaningful subset of the docket, but the pending-action total remains distributed across many other examiner assignments. Counsel should prioritize coordination for the matters before this examiner without treating that assignment as representative of the full portfolio.

The difference between the pending-action count and the examiner count shows that some examiners handle multiple matters. The difference between examiner and art-unit counts also indicates that several examiners operate within at least some shared technical units. A centralized docket process should therefore combine examiner-level monitoring with art-unit-specific review.

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

Portfolio Summary

27
Total Pending OAs
17
Non-Final OAs
7
Final Rejections
3
Advisory / Quayle

Response Deadline Pressure

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.

2
Overdue
0
Due this week
3
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. 5 of the docket's apps have a known mailing date.

-30dToday30d60d90d120d
Overdue (2)Due ≤ 30 days (3)

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.

12
Hard (44%)
13
Medium (48%)
2
Easy (7%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§101 + other1 (4%)
§103 only10 (37%)
§112 only2 (7%)
Double-patenting + other3 (11%)
Multi-statute (no §101)11 (41%)

Industry Mix

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

25
Life Sciences
93% of docket
0
Information Tech
0% of docket
0
Communications
0% of docket
0
Semiconductors
0% of docket
2
Mechanical / Eng
7% 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.

270 h
Manual time on pending OAs
54 h
Time saved (low, 20%)
94 h
Time saved (mid, 35%)
2.4 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
ZIMMER, MARC S 3 79.4% +16.1%
REDDY, KARUNA P 3 42.6% +10.4%
NELSON, MICHAEL B 2 21.5% +37.3%
ROSWELL, JESSICA MARIE 1 52.1% +36.4%
STEVENS, MARK V 1 65.5% +41.6%
BELUNIS, THOMAS JAMES 1 — —
DOUYON, LORNA M 1 56.8% +72.1%
PEPITONE, MICHAEL F 1 74.4% +22.0%
GOLOBOY, JAMES C 1 63.7% +8.7%
WITHERSPOON, SIKARL A 1 86.3% -20.1%

Quick Wins (1)

Cases in front of an examiner with an allow rate of 80%+ where the difficulty is Easy or Medium. The top 1 ordered by deadline are shown.

App #TitleExaminerDue in
18290892 PREPARATION OF IMINE-FUNCTIONAL ORGANOSILICON COMPOUNDS AND PRIMARY AMINO-FUNCTIONAL ORGANOSILICON COMPOUNDS WITHERSPOON, SIKARL A —

Hard Cases (13)

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
18568765 CURABLE SILICONE RUBBER COMPOSITIONS NELSON, MICHAEL B 15d
18013224 CURE AND FUNCTIONALIZATION OF OLEFIN/SILANE INTERPOLYMERS MCCULLEY, MEGAN CASSANDRA 20d
18677262 LOW RESILIENCE POLYURETHANE FOAM BASED ON TOLUENE DIISOCYANATE BELUNIS, THOMAS JAMES —
18703386 A MOISTURE RESISTANT TWO-COMPONENT ADHESIVE COMPOSITION PEPITONE, MICHAEL F —
18695038 MOISTURE CURABLE COMPOSITIONS GOLOBOY, JAMES C —
18695045 MOISTURE CURABLE COMPOSITIONS REDDY, KARUNA P —
18687916 TOUGHENED POLYAMIDE REDDY, KARUNA P —
18687324 THERMALLY CONDUCTIVE SILICONE RUBBER COMPOSITION REDDY, KARUNA P —

Interview Candidates (12)

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
18568765 CURABLE SILICONE RUBBER COMPOSITIONS NELSON, MICHAEL B 15d
18859516 ACTIVE ENERGY RAY CURABLE SILICONE COMPOSITION AND CURED PRODUCT THEREOF ROSWELL, JESSICA MARIE —
18847701 HAIR CONDITIONER FORMULATION STEVENS, MARK V —
18713223 AUTOMATIC DISHWASHING COMPOSITION DOUYON, LORNA M —
18703386 A MOISTURE RESISTANT TWO-COMPONENT ADHESIVE COMPOSITION PEPITONE, MICHAEL F —
18700311 METHOD OF REDUCING RESIDUAL WATER IN LAUNDRY ZIMMER, MARC S —
18695045 MOISTURE CURABLE COMPOSITIONS REDDY, KARUNA P —
18687916 TOUGHENED POLYAMIDE REDDY, KARUNA P —

Top Art Units

Art UnitApps
1764 5
1767 3
1765 3
1613 2
1761 2
1787 2
1717 1
1700 1
1771 1
1692 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
18859516 ACTIVE ENERGY RAY CURABLE SILICONE COMPOSITION AND CURED PRODUCT THEREOF ROSWELL, JESSICA MARIE 1717 §103 Non-Final OA — Pending Oct 23, 2024
18847701 HAIR CONDITIONER FORMULATION STEVENS, MARK V 1613 §103 Non-Final OA — Pending Sep 17, 2024
18677262 LOW RESILIENCE POLYURETHANE FOAM BASED ON TOLUENE DIISOCYANATE BELUNIS, THOMAS JAMES 1767 §103§112 Non-Final OA — Pending May 29, 2024
18713223 AUTOMATIC DISHWASHING COMPOSITION DOUYON, LORNA M 1761 §103 Final Rejection — Pending May 24, 2024
18703386 A MOISTURE RESISTANT TWO-COMPONENT ADHESIVE COMPOSITION PEPITONE, MICHAEL F 1767 §101§103§112 Non-Final OA — Pending Apr 22, 2024
18700311 METHOD OF REDUCING RESIDUAL WATER IN LAUNDRY ZIMMER, MARC S 1700 §103§112DP Non-Final OA — Pending Apr 11, 2024
18695038 MOISTURE CURABLE COMPOSITIONS GOLOBOY, JAMES C 1771 §102§103§112 Non-Final OA — Pending Mar 25, 2024
18695045 MOISTURE CURABLE COMPOSITIONS REDDY, KARUNA P 1764 §102§112 Non-Final OA — Pending Mar 25, 2024
18687916 TOUGHENED POLYAMIDE REDDY, KARUNA P 1764 §102§112Other Non-Final OA — Pending Feb 29, 2024
18687324 THERMALLY CONDUCTIVE SILICONE RUBBER COMPOSITION REDDY, KARUNA P 1764 §103§112 Non-Final OA — Pending Feb 28, 2024
18290969 PREPARATION OF PROPYLIMINE-FUNCTIONAL ORGANOSILICON COMPOUNDS AND PRIMARY AMINOPROPYL-FUNCTIONAL ORGANOSILICON COMPOUNDS ZIMMER, MARC S 1765 §112 Non-Final OA — Pending Jan 22, 2024
18290892 PREPARATION OF IMINE-FUNCTIONAL ORGANOSILICON COMPOUNDS AND PRIMARY AMINO-FUNCTIONAL ORGANOSILICON COMPOUNDS WITHERSPOON, SIKARL A 1692 §103DP Non-Final OA — Pending Jan 22, 2024
18580563 SILICONE FOAM COMPOSITION KRYLOVA, IRINA 1764 §103§112Other Non-Final OA — Pending Jan 18, 2024
18580574 APPARATUS AND METHOD FOR FILLING SYRINGES MAUST, TIMOTHY LEWIS 3783 §102§103 Non-Final OA — Pending Jan 18, 2024
18283294 ULTRAVIOLET-RAY-CURABLE COMPOSITION AND USE THEREOF KAUCHER, MARK S 1764 §103DP Non-Final OA — Pending Dec 12, 2023
18568765 CURABLE SILICONE RUBBER COMPOSITIONS NELSON, MICHAEL B 1787 §103 Final Rejection 15d Pending Dec 08, 2023
18287001 FLUOROSILICONE RELEASE COATING COMPOSITION AND RELEASE LINER NELSON, MICHAEL B 1787 §102§103 Final Rejection — Pending Oct 14, 2023
18283319 CURABLE POLYOLEFIN COMPOSITION AND CURED PRODUCT WALKER, AJA ARYANNA 1761 §103 Final Rejection — Pending Sep 21, 2023
18267192 METHOD OF PREPARING FILM AND COMPOSITION THEREFOR MALLOY, ANNA E 1737 §103 Non-Final OA 17d overdue Pending Jun 14, 2023
18036048 TWO-PART CONDENSATION CURABLE SILICONE COMPOSITIONS AND THEIR APPLICATIONS ZIMMER, MARC S 1765 §102§103 Non-Final OA — Pending May 09, 2023
18023713 POLYDIORGANOSILOXANE PREPARATION MOORE, MARGARET G 1765 §103 Non-Final OA 67d overdue Pending Feb 27, 2023
18013224 CURE AND FUNCTIONALIZATION OF OLEFIN/SILANE INTERPOLYMERS MCCULLEY, MEGAN CASSANDRA 1767 §103§112 Non-Final OA 20d Pending Dec 27, 2022
17908035 COATED SPONGES LEE, SIN J 1613 §103§112 Non-Final OA — Pending Aug 30, 2022
18696133 COMPOUNDS, TRANSITION METAL COMPLEX HYDROFORMYLATION CATALYST PRECUROR COMPOSITIONS COMPRISING SUCH COMPOUNDS, AND HYDROFORMYLATION PROCESSES NGUYEN, CAM N 1736 §112 Non-Final OA — Pending Mar 27, 2024
17997716 PROCESSES FOR REDUCING THE RATE OF PRESSURE DROP INCREASE IN A VESSEL SEIFU, LESSANEWORK T 1774 §103 Final Rejection 15d Pending Nov 01, 2022
18498361 Polymer-Based Wheel Assembly For Non-Pneumatic Tire KOTTER, KIP T 3615 §103 Final Rejection — Pending Oct 31, 2023
18497252 Thermoplastic Composition for Wire or Cable Jacket ZHANG, RUIYUN 1782 §103 Final Rejection — Pending Oct 30, 2023

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Frequently Asked Questions

How many pending USPTO office actions does DuPont de Nemours Inc. have?

DuPont de Nemours Inc. has 27 pending office actions as of October 2026, spread across 16 art units and 22 examiners.

Which USPTO examiner handles the most DuPont de Nemours Inc. applications?

Marc S Zimmer has the most, with 3 of DuPont de Nemours Inc.'s pending office actions.

What technology area are DuPont de Nemours Inc.'s patent applications in?

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

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