Prosecution Insights
Last updated: October 04, 2026

Cantor Colburn LLP - Dupont

Technology area: Chemistry & Materials

6 pending office actions • 3 clients • 5 examiners • 3 art units • 0 of 6 (0%) have an AI response strategy ready • 8 patents granted in the last 365 days

Analysis

Cantor Colburn LLP - DuPont operates in the Chemistry & Materials technology area, utilizing the firm's broad experience of 74190 career applications. This specific designation currently manages 5 pending office actions, representing a focused set of active matters. The firm's extensive history across a wide range of technical fields provides a strong context for its work in chemical and material science patents.

The firm reports a resolved allowance rate pct of 88.07, indicating success in securing patent rights. This success is achieved with an avg_office_actions_per_allowance of 3.16, suggesting that the firm typically navigates the examination process in a specific number of office actions. The 88.07 resolved allowance rate pct is a key indicator of the firm's effectiveness in the Chemistry & Materials sector. With 74190 career applications, the 3.16 avg_office_actions_per_allowance provides a reliable benchmark for the expected duration of the prosecution cycle. These data points offer a comprehensive view of the firm's performance and capacity.

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

Quality Metrics (n=74190 apps, methodology: how we score firms)

88.1%
Allowance Rate
n=74190
+0.55σ
Allowance Rate (norm)
n=74190
3.2
OAs to Allowance
n=52133
-0.21σ
OAs to Allow (norm)
n=52133
1018 days
Time to Allowance
n=52133
+3.9pp
Interview Lift
n=74190
25.8%
RCE Rate
n=74190
2.1%
Appeal Rate
n=74190

Rejection Performance (% of received rejections ultimately overcome)

74.8%
§101 Overcome
n=3210
80.4%
§102 Overcome
n=23947
80.7%
§103 Overcome
n=37287
82.0%
§112 Overcome
n=23674

Specialization & Scale

H10K, G02F, G06F
Top CPC Subclasses
10%
Top-3 CPC Share
n=74190
68
Practitioners
n=74190
1091.0
Apps / Practitioner
n=74190

Portfolio Summary

6
Total Pending OAs
1
Non-Final OAs
5
Final Rejections
0
Advisory / Quayle

Response Deadline Pressure

Based on the USPTO statutory response window for each pending office action. 4 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
3
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. 4 of the docket's apps have a known mailing date.

-30dToday30d60d90d120d
Due ≤ 30 days (1)Due ≤ 60 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.

1
Hard (17%)
5
Medium (83%)
0
Easy (0%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§103 only5 (83%)
Multi-statute (no §101)1 (17%)

Industry Mix

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

6
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.

60 h
Manual time on pending OAs
12 h
Time saved (low, 20%)
21 h
Time saved (mid, 35%)
0.5 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
CHAMPION, RICHARD DAVID 2 45.7% +11.9%
MCCULLOUGH, ERIC J. 1 31.8% +43.4%
KARST, DAVID THOMAS 1 64.7% +9.8%
CHU, JOHN S Y 1 76.8% +5.4%
MALLOY, ANNA E 1 46.5% -3.9%

Hard Cases (1)

Multi-statute / §101-driven matters, or cases in front of an examiner with an allow rate under 30%. The top 1 ordered by deadline are shown.

App #TitleExaminerDue in
18758631 FILTRATION MEMBRANES AND METHOD OF MANUFACTURE THEREOF MCCULLOUGH, ERIC J. —

Interview Candidates (3)

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 3 ordered by deadline are shown.

App #TitleExaminerDue in
17462216 PHOTORESIST COMPOSITIONS AND PATTERN FORMATION METHODS CHAMPION, RICHARD DAVID 42d
16731666 POLYMERS AND PHOTORESIST COMPOSITIONS CHAMPION, RICHARD DAVID 42d
18758631 FILTRATION MEMBRANES AND METHOD OF MANUFACTURE THEREOF MCCULLOUGH, ERIC J. —

Client Portfolio (3 clients)

Top Art Units

Art UnitApps
17374
17731
17671

Pending Office Actions

App #TitleClientExaminerArt UnitStatutesStatusDue inAIFiled
18758631 FILTRATION MEMBRANES AND METHOD OF MANUFACTURE THEREOF Dupont Electronic Materials International, LLC MCCULLOUGH, ERIC J. 1773 §103§112 Non-Final OA — Pending Jun 28, 2024
18521544 POLYMERS USEFUL AS SURFACE LEVELING AGENTS Rohm And Haas Electronic Materials LLC KARST, DAVID THOMAS 1767 §103 Final Rejection — Pending Nov 28, 2023
18085082 PHOTORESIST UNDERLAYER COMPOSITION Rohm And Haas Electronic Materials Korea Ltd. CHU, JOHN S Y 1737 §103 Final Rejection 21d Pending Dec 20, 2022
17490923 IODINE-CONTAINING ACID CLEAVABLE COMPOUNDS, POLYMERS DERIVED THEREFROM, AND PHOTORESIST COMPOSITIONS Rohm And Haas Electronic Materials LLC MALLOY, ANNA E 1737 §103 Final Rejection 35d Pending Sep 30, 2021
17462216 PHOTORESIST COMPOSITIONS AND PATTERN FORMATION METHODS Rohm And Haas Electronic Materials LLC CHAMPION, RICHARD DAVID 1737 §103 Final Rejection 42d Pending Aug 31, 2021
16731666 POLYMERS AND PHOTORESIST COMPOSITIONS Rohm And Haas Electronic Materials LLC CHAMPION, RICHARD DAVID 1737 §103 Final Rejection 42d Pending Dec 31, 2019

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