Prosecution Insights
Last updated: August 18, 2026

Donaldson Company, Inc.

20 pending office actions • 13 art units • 19 examiners • 0 of 20 (0%) have an AI response strategy ready • 57 patents granted in the last 365 days

Portfolio Summary

20
Total Pending OAs
15
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.

2
Overdue
0
Due this week
1
Due this month
0
Due in next 60 days
1
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
Overdue (2)Due ≤ 30 days (1)Due later (1)

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 (50%)
9
Medium (45%)
1
Easy (5%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§103 only4 (20%)
§102 only3 (15%)
Double-patenting only1 (5%)
Double-patenting + other2 (10%)
Multi-statute (no §101)10 (50%)

Industry Mix

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

13
Life Sciences
65% of docket
0
Information Tech
0% of docket
0
Communications
0% of docket
1
Semiconductors
5% of docket
1
Mechanical / Eng
5% of docket
5
Business / Other
25% 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.

200 h
Manual time on pending OAs
40 h
Time saved (low, 20%)
70 h
Time saved (mid, 35%)
1.8 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
ANBACHT, BRIT ELIZA 2 73.6% +20.9%
UNDERWOOD, JARREAS C 1 79.0% +21.9%
SANCHEZ-MEDINA, REINALDO 1 78.3% +21.4%
WORRELL, KEVIN 1 12.7% -3.6%
CLEMENTE, ROBERT ARTHUR 1 80.9% +7.2%
VO, HAI 1 57.1% +72.3%
HE, QIANPING 1 66.8% +15.0%
GITMAN, GABRIEL E 1 76.2% +20.3%
DESTA, ELIAS 1 84.0% +9.8%
PEO, JONATHAN M 1 48.2% +48.1%

Quick Wins (2)

Cases in front of an examiner with an allow rate of 80%+ where the difficulty is Easy or Medium. The top 2 ordered by deadline are shown.

App #TitleExaminerDue in
18776401 FILTER CARTRIDGES; AIR CLEANER ASSEMBLIES; HOUSINGS; FEATURES; COMPONENTS; AND, METHODS CLEMENTE, ROBERT ARTHUR
18581238 INDOOR AIR QUALITY MONITORING SYSTEM DESTA, ELIAS

Hard Cases (10)

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
19022784 DROPLET SENSORS FOR FUEL SYSTEMS UNDERWOOD, JARREAS C
18948051 POROUS NON-WOVEN PTFE COMPOSITIONS AND METHODS OF FORMING WORRELL, KEVIN
18742942 Porous PTFE Article with Hydrophilic Coating VO, HAI
18713103 SAFETY FILTER ELEMENT, FILTER SYSTEM, FILTER ASSEMBLY HE, QIANPING
18601203 MONITORING DEVICES FOR AIR FILTRATION SYSTEMS GITMAN, GABRIEL E
18391038 FILTER ELEMENT WITH CONVERTIBLE END CAP AND METHODS PEO, JONATHAN M
18383453 SEPARATION MEDIA AND PURIFICATION METHODS FOR CARBOHYDRATE BINDING DOMAIN CONTAINING MOLECULES DRODGE, JOSEPH W
18383464 SEPARATION MEDIA AND PURIFICATION METHODS FOR BLOOD ANTIBODIES USING THE SAME JEONG, YOUNGSUL

Interview Candidates (8)

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
17973657 CHEMICAL FILTER ASSEMBLIES ANBACHT, BRIT ELIZA 16d
18970532 BREATHER ASSEMBLY WITH CONDUCTIVE SHIELD SANCHEZ-MEDINA, REINALDO 79d
19022784 DROPLET SENSORS FOR FUEL SYSTEMS UNDERWOOD, JARREAS C
18742942 Porous PTFE Article with Hydrophilic Coating VO, HAI
18713103 SAFETY FILTER ELEMENT, FILTER SYSTEM, FILTER ASSEMBLY HE, QIANPING
18601203 MONITORING DEVICES FOR AIR FILTRATION SYSTEMS GITMAN, GABRIEL E
18391038 FILTER ELEMENT WITH CONVERTIBLE END CAP AND METHODS PEO, JONATHAN M
18547951 A PLASTIC CONNECTOR AND AIR CLEANER SYSTEM WITH AIR CLEANERS IN PARALLEL CONNECTION USING THE SAME ANBACHT, BRIT ELIZA

Top Art Units

Art UnitApps
1772 2
1779 2
1776 2
2877 1
3753 1
1788 1
4100 1
1732 1
1671 1
1693 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
19022784 DROPLET SENSORS FOR FUEL SYSTEMS UNDERWOOD, JARREAS C 2877 §103§112 Non-Final OA Pending Jan 15, 2025
18970532 BREATHER ASSEMBLY WITH CONDUCTIVE SHIELD SANCHEZ-MEDINA, REINALDO 3753 §102 Non-Final OA 79d Pending Dec 05, 2024
18948051 POROUS NON-WOVEN PTFE COMPOSITIONS AND METHODS OF FORMING WORRELL, KEVIN §103§112 Non-Final OA Pending Nov 14, 2024
18776401 FILTER CARTRIDGES; AIR CLEANER ASSEMBLIES; HOUSINGS; FEATURES; COMPONENTS; AND, METHODS CLEMENTE, ROBERT ARTHUR DP Non-Final OA Pending Jul 18, 2024
18742942 Porous PTFE Article with Hydrophilic Coating VO, HAI 1788 §102§103§112 Non-Final OA Pending Jun 13, 2024
18713103 SAFETY FILTER ELEMENT, FILTER SYSTEM, FILTER ASSEMBLY HE, QIANPING §102§112Other Non-Final OA Pending May 23, 2024
18601203 MONITORING DEVICES FOR AIR FILTRATION SYSTEMS GITMAN, GABRIEL E 1772 §103§112 Final Rejection Pending Mar 11, 2024
18581238 INDOOR AIR QUALITY MONITORING SYSTEM DESTA, ELIAS §102 Non-Final OA Pending Feb 19, 2024
18391038 FILTER ELEMENT WITH CONVERTIBLE END CAP AND METHODS PEO, JONATHAN M 1779 §102§103 Non-Final OA Pending Dec 20, 2023
18527047 POROUS SUBSTRATES COMPRISING PTFE COMPOSITIONS LACLAIR, LOGAN EDWARD 4100 §102§103DP Non-Final OA Pending Dec 01, 2023
18383444 SEPARATION MEDIA AND PURIFICATION METHODS FOR CARBOHYDRATE CONTAINING MOLECULES USING THE SAME NORRIS, CLAIRE A 1779 §103 Final Rejection Pending Oct 24, 2023
18383453 SEPARATION MEDIA AND PURIFICATION METHODS FOR CARBOHYDRATE BINDING DOMAIN CONTAINING MOLECULES DRODGE, JOSEPH W 1732 §102§103§112Other Non-Final OA Pending Oct 24, 2023
18383464 SEPARATION MEDIA AND PURIFICATION METHODS FOR BLOOD ANTIBODIES USING THE SAME JEONG, YOUNGSUL 1772 §103§112 Non-Final OA Pending Oct 24, 2023
18547951 A PLASTIC CONNECTOR AND AIR CLEANER SYSTEM WITH AIR CLEANERS IN PARALLEL CONNECTION USING THE SAME ANBACHT, BRIT ELIZA 1776 §102§112 Non-Final OA Pending Aug 25, 2023
18351209 COMPOSITIONS AND METHODS FOR IMPROVING VIRAL TRANSDUCTION LY, KRISTINA ELISABETH 1671 §112DPOther Non-Final OA Pending Jul 12, 2023
18036732 METHODS OF OLIGONUCLEOTIDE-BASED AFFINITY CHROMATOGRAPHY BERRY, LAYLA D 1693 §103§112 Non-Final OA Pending May 12, 2023
18074349 NANOMATERIAL COMPOSITIONS AND METHODS OF MAKING THE SAME VAN KIRK, DUSTIN KENWOOD 1722 §103 Final Rejection Pending Dec 02, 2022
17973657 CHEMICAL FILTER ASSEMBLIES ANBACHT, BRIT ELIZA 1776 §102 Non-Final OA 16d Pending Oct 26, 2022
17780627 SYSTEMS AND METHODS FOR SEPARATING PARTICLES IN FLUIDS VARMA, AKASH K 1773 §103 Final Rejection 37d overdue Pending May 27, 2022
17742956 EPOXIDE-ACTIVATED SUBSTRATES AND HYDROPHOBIC INTERACTION CHROMATOGRAPHY MADE THEREFROM FOR POLYNUCLEOTIDE PURIFICATION FEELY, MICHAEL J 1766 §103 Final Rejection 3d overdue Pending May 12, 2022

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