Prosecution Insights
Last updated: October 25, 2026

Marsulex Environmental Technologies Corporation

Technology area: Chemistry & Materials

1 pending office actions • 1 art units • 1 examiners • 0 of 1 (0%) have an AI response strategy ready

Analysis

Marsulex Environmental Technologies Corporation has 1 pending office action in the Chemistry & Materials technology area. This matter is assigned to 1 distinct examiner, GREGORIO, GUINEVER S, who is the busiest examiner for the portfolio with 1 pending case. Prosecution is limited to 1 distinct art unit. This indicates a very focused and centralized approach to the company's current active patent application, with all work handled by a single examiner.

With only one active matter and one assigned examiner, the company has a very streamlined presence at the patent office. This singular focus on the assigned art unit means that the company's current legal efforts are not diluted across multiple administrative channels. GREGORIO, GUINEVER S holds total influence over the portfolio's current trajectory. Practitioners should prioritize a clear and direct communication line with this examiner to resolve any issues. Understanding the specific examination culture of this single art unit is essential for predicting the timeline and eventual outcome of the 1 pending office action.

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

Portfolio Summary

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

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.

0
Hard (0%)
1
Medium (100%)
0
Easy (0%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§103 only1 (100%)

Industry Mix

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

1
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.

10 h
Manual time on pending OAs
2 h
Time saved (low, 20%)
4 h
Time saved (mid, 35%)
0.1 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
GREGORIO, GUINEVER S 1 73.1% +18.4%

Interview Candidates (1)

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 1 ordered by deadline are shown.

App #TitleExaminerDue in
18311492 SYSTEMS AND PROCESSES FOR PRODUCING AMMONIUM SULFATE FROM WASTE STREAMS GREGORIO, GUINEVER S —

Top Art Units

Art UnitApps
1732 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
18311492 SYSTEMS AND PROCESSES FOR PRODUCING AMMONIUM SULFATE FROM WASTE STREAMS GREGORIO, GUINEVER S 1732 §103 Non-Final OA — Pending May 03, 2023

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Frequently Asked Questions

How many pending USPTO office actions does Marsulex Environmental Technologies Corporation have?

Marsulex Environmental Technologies Corporation has 1 pending office actions as of October 2026, spread across 1 art units and 1 examiners.

Which USPTO examiner handles the most Marsulex Environmental Technologies Corporation applications?

Guinever S Gregorio has the most, with 1 of Marsulex Environmental Technologies Corporation's pending office actions.

What technology area are Marsulex Environmental Technologies Corporation's patent applications in?

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

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