Prosecution Insights
Last updated: October 25, 2026

Versum Materials US LLC

Technology area: Chemistry & Materials

25 pending office actions • 17 art units • 23 examiners • 0 of 25 (0%) have an AI response strategy ready • 26 patents granted in the last 365 days

Analysis

Versum Materials US LLC has 26 pending office actions in Chemistry & Materials. The docket spans 23 distinct examiners and 17 distinct art units, combining broad examiner distribution with recurring assignments at both levels. That structure supports portfolio-wide process controls, while the repeated settings may help counsel identify examination themes affecting related technologies.

DEO, DUY VU NGUYEN is the busiest examiner, with 2 pending matters. The limited concentration means that no single examiner-specific approach will cover the portfolio. Counsel should coordinate claim terminology, disclosure positions, and prior-art responses centrally, then tailor each filing to its assigned examiner and art unit.

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

Portfolio Summary

25
Total Pending OAs
13
Non-Final OAs
12
Final Rejections
0
Advisory / Quayle

Response Deadline Pressure

Based on the USPTO statutory response window for each pending office action. 10 of the docket's apps have a known mailing date; the rest are excluded from the tile counts.

8
Overdue
0
Due this week
0
Due this month
2
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. 10 of the docket's apps have a known mailing date.

-30dToday30d60d90d120d
Overdue (8)Due ≤ 60 days (2)

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.

10
Hard (40%)
13
Medium (52%)
1
Easy (4%)
1
Unknown (4%)

Rejection Statute Mix

BucketCases
§101 + other1 (4%)
§103 only11 (44%)
§102 only2 (8%)
§112 only1 (4%)
Multi-statute (no §101)9 (36%)
No statute on record1 (4%)

Industry Mix

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

19
Life Sciences
76% of docket
1
Information Tech
4% of docket
0
Communications
0% of docket
4
Semiconductors
16% of docket
1
Mechanical / Eng
4% 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.

250 h
Manual time on pending OAs
50 h
Time saved (low, 20%)
88 h
Time saved (mid, 35%)
2.2 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
DEO, DUY VU NGUYEN 2 82.5% +7.3%
MCCLURE, CHRISTINA D 2 29.9% +33.1%
MILLER, MICHAEL G 1 52.3% +15.6%
WEDDLE, ALEXANDER MARION 1 63.7% +25.5%
WALTERS JR, ROBERT S 1 51.6% +50.4%
DAGENAIS, KRISTEN A 1 64.0% +19.8%
MOORE, MARGARET G 1 68.1% +15.6%
NASSIRI MOTLAGH, ANITA 1 55.9% +24.3%
MOORE, KARLA A 1 43.1% +13.6%
PAIK, SANG YEOP 1 65.5% +16.3%

Hard Cases (12)

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
18548846 SELECTIVE DEPOSITION OF SILICON DIELECTRIC FILM NGUYEN, SOPHIA T 104d overdue
17621198 COMPOSITIONS AND METHODS USING SAME FOR DEPOSITION OF SILICON-CONTAINING FILM MCCLURE, CHRISTINA D 4d overdue
18856877 BORON-CONTAINING PRECURSORS FOR THE ALD DEPOSITION OF BORON NITRIDE FILMS WALTERS JR, ROBERT S 33d
18282709 SHARED DATA INDUCED QUALITY CONTROL SYSTEM FOR MATERIALS CHIUSANO, ANDREW TSUTOMU 48d
18842609 Stable Chemical Mechanical Planarization Polishing Compositions And Methods For High Rate Silicon Oxide Removal DEO, DUY VU NGUYEN —
18704551 Homoleptic Bismuth Precursors For Depositing Bismuth Oxide Containing Thin Films DAGENAIS, KRISTEN A —
18582396 HALIDOSILANE COMPOUNDS AND COMPOSITIONS AND PROCESSES FOR DEPOSITING SILICON-CONTAINING FILMS USING SAME MOORE, KARLA A —
18293543 MULTIPLE ZONE HEATED ENCLOSURE FOR OPTIMIZED SUBLIMATION OF SOLID-PHASE PRECURSORS PAIK, SANG YEOP —

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
18585563 ULTRA-HIGH PURITY TUNGSTEN CHLORIDES NASSIRI MOTLAGH, ANITA 156d overdue
18703240 SILANOLS AND SILANEDIOLS MOORE, MARGARET G 58d overdue
18865652 COMPOSITIONS AND METHODS USING SAME FOR CARBON DOPED SILICON CONTAINING FILMS WEDDLE, ALEXANDER MARION 31d overdue
17621198 COMPOSITIONS AND METHODS USING SAME FOR DEPOSITION OF SILICON-CONTAINING FILM MCCLURE, CHRISTINA D 4d overdue
18856877 BORON-CONTAINING PRECURSORS FOR THE ALD DEPOSITION OF BORON NITRIDE FILMS WALTERS JR, ROBERT S 33d
19226057 COMPOSITIONS AND METHODS USING SAME FOR THERMAL DEPOSITION SILICON-CONTAINING FILMS MILLER, MICHAEL G —
18704551 Homoleptic Bismuth Precursors For Depositing Bismuth Oxide Containing Thin Films DAGENAIS, KRISTEN A —
18582396 HALIDOSILANE COMPOUNDS AND COMPOSITIONS AND PROCESSES FOR DEPOSITING SILICON-CONTAINING FILMS USING SAME MOORE, KARLA A —

Top Art Units

Art UnitApps
1712 3
1717 3
1713 3
1718 3
1765 1
1734 1
1716 1
3761 1
1736 1
1732 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
19226057 COMPOSITIONS AND METHODS USING SAME FOR THERMAL DEPOSITION SILICON-CONTAINING FILMS MILLER, MICHAEL G 1712 §102 Non-Final OA — Pending Jun 02, 2025
18865652 COMPOSITIONS AND METHODS USING SAME FOR CARBON DOPED SILICON CONTAINING FILMS WEDDLE, ALEXANDER MARION 1712 §103 Final Rejection 31d overdue Pending Nov 13, 2024
18856877 BORON-CONTAINING PRECURSORS FOR THE ALD DEPOSITION OF BORON NITRIDE FILMS WALTERS JR, ROBERT S 1717 §102§103 Final Rejection 33d Pending Oct 14, 2024
18842609 Stable Chemical Mechanical Planarization Polishing Compositions And Methods For High Rate Silicon Oxide Removal DEO, DUY VU NGUYEN 1713 §103§112 Non-Final OA — Pending Aug 29, 2024
18713260 Tungsten Chemical Mechanical Polishing Slurries DEO, DUY VU NGUYEN 1713 — Non-Final OA — Pending May 24, 2024
18704551 Homoleptic Bismuth Precursors For Depositing Bismuth Oxide Containing Thin Films DAGENAIS, KRISTEN A 1717 §102§103 Non-Final OA — Pending Apr 25, 2024
18703240 SILANOLS AND SILANEDIOLS MOORE, MARGARET G 1765 §103 Final Rejection 58d overdue Pending Apr 19, 2024
18585563 ULTRA-HIGH PURITY TUNGSTEN CHLORIDES NASSIRI MOTLAGH, ANITA 1734 §103 Final Rejection 156d overdue Pending Feb 23, 2024
18582396 HALIDOSILANE COMPOUNDS AND COMPOSITIONS AND PROCESSES FOR DEPOSITING SILICON-CONTAINING FILMS USING SAME MOORE, KARLA A 1716 §103§112 Non-Final OA — Pending Feb 20, 2024
18293543 MULTIPLE ZONE HEATED ENCLOSURE FOR OPTIMIZED SUBLIMATION OF SOLID-PHASE PRECURSORS PAIK, SANG YEOP 3761 §103§112 Non-Final OA — Pending Jan 30, 2024
18565326 Ultra-Pure Molybdenum Dichloride Dioxide, Packaged Forms Thereof And Methods Of Preparing The Same NGUYEN, CAM N 1736 §102 Non-Final OA — Pending Nov 29, 2023
18515031 COMPOSITIONS AND METHODS FOR DEPOSITING SILICON-CONTAINING FILMS COHEN, STEFANIE J 1732 §103 Non-Final OA — Pending Nov 20, 2023
18561833 New Precursors For Depositing Films With High Elastic Modulus HERNANDEZ-KENNEY, JOSE 1717 §103§112 Final Rejection — Pending Nov 17, 2023
18556199 Compositions For Removing A Photoresist From A Substrate And Uses Thereof TRAYWICK, ANDREW PRESTON 1737 §103§112 Non-Final OA — Pending Oct 19, 2023
18282709 SHARED DATA INDUCED QUALITY CONTROL SYSTEM FOR MATERIALS CHIUSANO, ANDREW TSUTOMU 2144 §101§103 Final Rejection 48d Pending Sep 18, 2023
18548846 SELECTIVE DEPOSITION OF SILICON DIELECTRIC FILM NGUYEN, SOPHIA T 2893 §103§112 Final Rejection 104d overdue Pending Sep 01, 2023
18333759 STABLE ALKENYL OR ALKYNYL-CONTAINING ORGANOSILICON PRECURSOR COMPOSITIONS PAGANO, ALEXANDER R 1692 §102§103 Non-Final OA — Pending Jun 13, 2023
18255530 Chemical Mechanical Planarization (CMP) For Copper And Through-Silicon Via (TSV) LU, JIONG-PING 1713 §103 Final Rejection — Pending Jun 01, 2023
18006659 CYCLOSILOXANES AND FILMS MADE THEREWITH MURATA, AUSTIN 1712 §103 Non-Final OA — Pending Jan 24, 2023
17754038 CHEMICAL MECHANICAL PLANARIZATION POLISHING COMPOSITIONS FOR IMPROVING WITH-IN DIE NON-UNIFORMITIES KNUDSON, BRAD ALLAN 2817 §103 Final Rejection 97d overdue Pending Mar 22, 2022
17642185 MONOALKOXYSILANES AND DENSE ORGANOSILICA FILMS MADE THEREFROM MCCLURE, CHRISTINA D 1718 §103 Final Rejection — Pending Mar 10, 2022
17584120 Methods For Making Silicon Containing Films That Have High Carbon Content MAYY, MOHAMMAD 1718 §103 Final Rejection — Pending Jan 25, 2022
17621198 COMPOSITIONS AND METHODS USING SAME FOR DEPOSITION OF SILICON-CONTAINING FILM MCCLURE, CHRISTINA D 1718 §103 Final Rejection 4d overdue Pending Dec 20, 2021
17281898 METHODS FOR MAKING SILICON AND NITROGEN CONTAINING FILMS KIM, JAY C 2815 §112 Non-Final OA 52d overdue Pending Mar 31, 2021
16388225 Compositions and Methods Using Same for Deposition of Silicon-Containing Films WILCZEWSKI, MARY A 2898 §103 Non-Final OA 22d overdue Pending Apr 18, 2019

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Frequently Asked Questions

How many pending USPTO office actions does Versum Materials US LLC have?

Versum Materials US LLC has 25 pending office actions as of October 2026, spread across 17 art units and 23 examiners.

Which USPTO examiner handles the most Versum Materials US LLC applications?

Duy Vu Nguyen Deo has the most, with 2 of Versum Materials US LLC's pending office actions.

What technology area are Versum Materials US LLC's patent applications in?

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

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