Prosecution Insights
Last updated: October 25, 2026

Sartorius AG

Technology area: Chemistry & Materials

13 pending office actions • 8 art units • 13 examiners • 0 of 13 (0%) have an AI response strategy ready • 18 patents granted in the last 365 days

Analysis

Sartorius AG has 13 pending office actions in Chemistry & Materials. The matters are distributed among 13 examiners and 8 art units, indicating broad examiner involvement and repeated activity within some art units.

RAEVIS, ROBERT R is the busiest examiner, with 1 pending matter. The absence of a larger concentration with that examiner makes portfolio-wide docket coordination important, while art-unit-level review may reveal the most useful patterns for response planning.

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

Portfolio Summary

13
Total Pending OAs
10
Non-Final OAs
3
Final Rejections
0
Advisory / Quayle

Response Deadline Pressure

Based on the USPTO statutory response window for each pending office action. 1 of the docket's apps have a known mailing date; the rest are excluded from the tile counts.

1
Overdue
0
Due this week
0
Due this month
0
Due in next 60 days
0
Due later

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.

9
Hard (69%)
2
Medium (15%)
2
Easy (15%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§103 only2 (15%)
§112 only1 (8%)
Double-patenting only1 (8%)
Multi-statute (no §101)9 (69%)

Industry Mix

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

11
Life Sciences
85% of docket
0
Information Tech
0% of docket
0
Communications
0% of docket
1
Semiconductors
8% of docket
1
Mechanical / Eng
8% 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.

130 h
Manual time on pending OAs
26 h
Time saved (low, 20%)
46 h
Time saved (mid, 35%)
1.1 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
RAEVIS, ROBERT R 1 83.3% +15.3%
BRADFORD, JONATHAN 1 76.1% +21.3%
GURTOWSKI, RICHARD C 1 72.3% +37.8%
GONZALEZ, MADELINE 1 72.4% +16.0%
ROTONDI, CONNOR JON 1 40.0% +40.0%
KWAK, DEAN P 1 58.8% +37.1%
EDWARDS, LYDIA E 1 60.1% +6.0%
KRCHA, MATTHEW D 1 64.3% +35.5%
PATEL, PRANAV N 1 68.8% +21.7%
HERBERT, MADISON TAYLOR 1 59.1% +53.7%

Hard Cases (9)

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
18014583 AUTOMATED CENTRIFUGE SETUP OF A BIOPROCESSING INSTALLATION HERBERT, MADISON TAYLOR 31d overdue
18877235 SENSOR HOLDING DEVICE RAEVIS, ROBERT R —
18852416 SEPARATION SYSTEM FOR SEPARATING AND PURIFYING A TARGET COMPONENT GURTOWSKI, RICHARD C —
18700457 SEPARATION SYSTEM AND METHOD FOR SEPARATING AND PURIFYING A TARGET COMPONENT ROTONDI, CONNOR JON —
18566208 PRODUCT FOR PROVIDING MEMBRANE ELEMENTS AND MANUFACTURING METHOD KWAK, DEAN P —
18283403 DEVICE FOR CONTINUOUS VIRUS INACTIVATION EDWARDS, LYDIA E —
18281159 METHOD FOR OPERATING A BIOPROCESS INSTALLATION KRCHA, MATTHEW D —
18015934 DEVICE ASSEMBLY FOR PRODUCING BIOCONJUGATES PATEL, PRANAV N —

Interview Candidates (9)

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
18014583 AUTOMATED CENTRIFUGE SETUP OF A BIOPROCESSING INSTALLATION HERBERT, MADISON TAYLOR 31d overdue
18877235 SENSOR HOLDING DEVICE RAEVIS, ROBERT R —
18977545 CENTRIFUGE, METHOD FOR OPERATING A CENTRIFUGE AND COMPUTER-READABLE MEDIUM BRADFORD, JONATHAN —
18852416 SEPARATION SYSTEM FOR SEPARATING AND PURIFYING A TARGET COMPONENT GURTOWSKI, RICHARD C —
18882894 DISPOSABLE FILTER CAPSULE FOR A FILTRATION DEVICE GONZALEZ, MADELINE —
18700457 SEPARATION SYSTEM AND METHOD FOR SEPARATING AND PURIFYING A TARGET COMPONENT ROTONDI, CONNOR JON —
18566208 PRODUCT FOR PROVIDING MEMBRANE ELEMENTS AND MANUFACTURING METHOD KWAK, DEAN P —
18281159 METHOD FOR OPERATING A BIOPROCESS INSTALLATION KRCHA, MATTHEW D —

Top Art Units

Art UnitApps
1773 3
1799 3
1798 2
2855 1
3763 1
1796 1
1777 1
1758 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
18877235 SENSOR HOLDING DEVICE RAEVIS, ROBERT R 2855 §102§103§112 Non-Final OA — Pending Dec 19, 2024
18977545 CENTRIFUGE, METHOD FOR OPERATING A CENTRIFUGE AND COMPUTER-READABLE MEDIUM BRADFORD, JONATHAN 3763 §112 Non-Final OA — Pending Dec 11, 2024
18852416 SEPARATION SYSTEM FOR SEPARATING AND PURIFYING A TARGET COMPONENT GURTOWSKI, RICHARD C 1773 §102§103§112 Non-Final OA — Pending Sep 27, 2024
18882894 DISPOSABLE FILTER CAPSULE FOR A FILTRATION DEVICE GONZALEZ, MADELINE 1773 DP Non-Final OA — Pending Sep 12, 2024
18700457 SEPARATION SYSTEM AND METHOD FOR SEPARATING AND PURIFYING A TARGET COMPONENT ROTONDI, CONNOR JON 1773 §103§112 Non-Final OA — Pending Apr 11, 2024
18566208 PRODUCT FOR PROVIDING MEMBRANE ELEMENTS AND MANUFACTURING METHOD KWAK, DEAN P 1798 §102§103 Non-Final OA — Pending Dec 01, 2023
18283403 DEVICE FOR CONTINUOUS VIRUS INACTIVATION EDWARDS, LYDIA E 1796 §102§103§112Other Non-Final OA — Pending Sep 21, 2023
18281159 METHOD FOR OPERATING A BIOPROCESS INSTALLATION KRCHA, MATTHEW D 1799 §103§112 Non-Final OA — Pending Sep 08, 2023
18015934 DEVICE ASSEMBLY FOR PRODUCING BIOCONJUGATES PATEL, PRANAV N 1777 §103§112 Non-Final OA — Pending Jan 12, 2023
18014583 AUTOMATED CENTRIFUGE SETUP OF A BIOPROCESSING INSTALLATION HERBERT, MADISON TAYLOR 1758 §103§112 Final Rejection 31d overdue Pending Jan 05, 2023
17928196 SPARGING DEVICE BOWERS, NATHAN ANDREW 1799 §103 Final Rejection — Pending Nov 28, 2022
17922165 AERATION DEVICE FOR A BIOPROCESSING INSTALLATION HENKEL, DANIELLE B 1799 §102§103§112Other Non-Final OA — Pending Oct 28, 2022
17534108 BIOPROCESS FILTRATION EXPERIMENT SYSTEM GZYBOWSKI, MICHAEL STANLEY 1798 §103 Final Rejection — Pending Nov 23, 2021

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Frequently Asked Questions

How many pending USPTO office actions does Sartorius AG have?

Sartorius AG has 13 pending office actions as of October 2026, spread across 8 art units and 13 examiners.

Which USPTO examiner handles the most Sartorius AG applications?

Robert R Raevis has the most, with 1 of Sartorius AG's pending office actions.

What technology area are Sartorius AG's patent applications in?

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

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