Company · Industrial Machinery & Equipment

Donaldson Company, Inc

Federal civil lawsuits naming Donaldson Company, Inc, a Industrial Machinery & Equipment company.

Public CompanyIndustrial Machinery & Equipment

Ticker: NYSE: DCI
Business: Industrial & Commercial Fans & Blowers & Air Purifing Equip
Headquarters: Bloomington, MN
Incorporated in: Delaware
SEC CIK: 29644

Donaldson Company, Inc is a public company in Industrial & Commercial Fans & Blowers & Air Purifing Equip, based in Bloomington, MN (traded on NYSE as DCI, incorporated in Delaware). It appears in 57 federal civil lawsuits in this index, most often as a defendant (32 of 57). These cases are most often Patent and Civil Rights matters, filed between 1990 and 2025, most frequently in District Court, D. Minnesota. The most common causes of action are Americans with Disabilities Act, Patent Infringement, and Employment. Frequent opposing parties include Quick, Vortox Company, Inc, and Engineered Products.

Lawsuits

As Defendant

As Plaintiff

Open

Terminated

1990–2025

Span

10 mo

Median Duration

1.6 cases/yrPredominantly defendant · 56%Patent-heavy · 42%Activity declining

Cases by State

Open Cases Over Time

1990peak 6 open2025

Case Types Over Time

19902025

PatentCivil RightsContractLaborProduct Liability

Filings by Year

19902025

Case Types filter →

Where Filed filter →

Frequent Opposing Parties

57 Cases — Newest First

Donaldson Company, Inc v. Torque Parts LLC

Patent Open District Court, N.D. IllinoisNo. 1:25-cv-07119Filed 06/25/2025
Fleming v. Donaldson Company, Inc

Civil Rights Terminated District Court, N.D. IowaNo. 6:22-cv-02077Filed 12/29/2022
Frye v. Donaldson Company, Inc

Civil Rights Terminated District Court, S.D. IndianaNo. 1:21-cv-03070Filed 12/19/2021
Case v. Donaldson Company, Inc

Civil Rights Terminated District Court, N.D. IndianaNo. 4:15-cv-00084Filed 09/21/2015
Donaldson Company, Inc v. Action Filtration, Inc

Patent Terminated District Court, S.D. IndianaNo. 1:15-cv-00887Filed 06/05/2015
Donaldson Company, Inc v. Filter Service & Testing Corp

Patent Terminated District Court, D. ColoradoNo. 1:15-cv-00789Filed 04/15/2015
Donaldson Company, Inc v. Baldwin Filters, Inc

Patent Terminated District Court, D. MinnesotaNo. 0:13-cv-03095Filed 11/12/2013
Donaldson Company, Inc v. International Baghouse Supply, Inc

Patent Terminated District Court, D. MinnesotaNo. 0:12-cv-01337Filed 06/05/2012
National Union Fire Insurance Company of Pittsburgh, PA v. Donaldson Company, Inc

Contract Terminated District Court, D. MinnesotaNo. 0:10-cv-04948Filed 12/21/2010
Donaldson Company, Inc v. Group Four, Inc

Patent Terminated District Court, D. MinnesotaNo. 0:10-cv-04287Filed 10/20/2010
Donaldson Company, Inc v. Clark Filter, Inc

Patent Terminated District Court, D. MinnesotaNo. 0:10-cv-04286Filed 10/20/2010
Tex Pat, LLC v. Donaldson Company, Inc

Patent Terminated District Court, E.D. TexasNo. 5:10-cv-00144Filed 08/19/2010
Williams v. Donaldson Company

Civil Rights Terminated District Court, S.D. IndianaNo. 1:10-cv-00939Filed 07/23/2010
Donaldson Company, Inc v. AAF-McQuay, Inc

Patent Terminated District Court, D. MinnesotaNo. 0:10-cv-01816Filed 04/27/2010
Donaldson Company, Inc v. Air Filtration Systems, LLC

Patent Terminated District Court, D. MinnesotaNo. 0:10-cv-01817Filed 04/27/2010
Donaldson Company, Inc v. Baldwin Filters, Inc

Patent Terminated District Court, D. MinnesotaNo. 0:09-cv-01049Filed 05/05/2009
Carroll v. Donaldson Company, Inc

Labor Terminated District Court, E.D. KentuckyNo. 5:09-cv-00163Filed 05/04/2009
Donaldson Company, Inc v. Burroughs Diesel, Inc

Contract Terminated District Court, E.D. MissouriFiled 10/09/2007
Donaldson Company, Inc v. Burroughs Diesel, Inc

Contract Terminated District Court, E.D. MissouriNo. 4:07-cv-01711Filed 10/09/2007
Donaldson Company, Inc v. Mann+Hummel USA, Inc

Patent Terminated District Court, D. MinnesotaNo. 0:07-cv-04136Filed 10/01/2007
Johnson v. Donaldson Group

Civil Rights Terminated District Court, E.D. VirginiaNo. 1:06-cv-01292Filed 12/04/2006
Donaldson Company, Inc v. Apel International, Inc

Patent Terminated District Court, D. MinnesotaNo. 0:04-cv-04779Filed 11/12/2004
Donaldson Company, Inc v. Tdc Filter Manufacturing Inc

Patent Terminated District Court, D. MinnesotaNo. 0:04-cv-04529Filed 10/18/2004
Donaldson Company, Inc v. Cummins Filtration, Inc

Patent Terminated District Court, D. MinnesotaNo. 0:04-cv-02680Filed 05/13/2004
Donaldson Company, Inc v. Cronin

Contract Terminated District Court, D. MinnesotaNo. 0:04-cv-02592Filed 04/28/2004
Donaldson Company, Inc v. Daveco Technology

Patent Terminated District Court, D. MinnesotaNo. 0:04-cv-01067Filed 02/27/2004
Donaldson Company v. Vortox Company, Inc

Trademark Terminated District Court, D. MinnesotaNo. 0:03-cv-05291Filed 09/23/2003
Donaldson Co Inc v. Vortox Company, Inc

Patent Terminated District Court, D. MinnesotaNo. 0:03-cv-03305Filed 05/30/2003
Donaldson Co Inc v. Aer Control Sys LLC

Contract Terminated District Court, D. ConnecticutNo. 3:02-cv-00833Filed 05/14/2002
Donaldson Company v. Brandon Intl

Patent Terminated District Court, D. MinnesotaNo. 0:02-cv-00243Filed 01/23/2002
Clearline Cutlery v. Donaldson Co Inc

Contract Terminated District Court, S.D. IowaNo. 4:00-cv-20498Filed 09/01/2000
Alvarez Est of v. Donaldson Co Inc

Product Liability Terminated District Court, N.D. IndianaNo. 3:99-cv-00194Filed 04/01/1999
Hillard v. Donaldson Co Inc

Civil Rights Terminated District Court, E.D. KentuckyNo. 5:99-cv-00033Filed 02/03/1999
Claeys v. Donaldson Co Inc

Civil Rights Terminated District Court, N.D. IndianaNo. 3:99-cv-00068Filed 02/03/1999
Engineered Products v. Donaldson Company

Patent Terminated District Court, N.D. IowaFiled 11/20/1998
Engineered Products v. Donaldson Company

Patent Terminated District Court, N.D. IowaNo. 6:98-cv-02106Filed 11/20/1998
Apg Inc v. Donaldson Co Inc

Personal Property / Fraud Terminated District Court, N.D. IndianaNo. 3:98-cv-00401Filed 07/27/1998
Gore & Associates v. Donaldson Company

Patent Terminated District Court, D. DelawareNo. 1:97-cv-00473Filed 08/18/1997
Carson v. Donaldson Co Inc

Civil Rights Terminated District Court, E.D. KentuckyNo. 5:97-cv-00004Filed 01/06/1997
Burchett v. Donaldson Co Inc

Civil Rights Terminated District Court, S.D. IowaNo. 4:96-cv-80819Filed 11/20/1996
Donaldson Co Inc v. Nelson Industries

Patent Terminated District Court, D. MinnesotaNo. 4:96-cv-01078Filed 11/01/1996
Quick v. Donaldson Co Inc

Civil Rights Terminated District Court, S.D. IowaNo. 4:96-cv-80368Filed 05/14/1996
Donaldson Company v. Bha Tex, Inc

Patent Terminated District Court, D. DelawareNo. 1:96-cv-00230Filed 05/03/1996
Daley v. Donaldson Co, Inc

Civil Rights Terminated District Court, W.D. MissouriNo. 5:96-cv-06034Filed 03/20/1996
Superior Freight Inc v. Donaldson Company

Banking / Commerce Terminated District Court, D. MinnesotaFiled 12/14/1995
Westart v. Donaldson Co Inc

Civil Rights Terminated District Court, N.D. IllinoisNo. 3:95-cv-50298Filed 10/26/1995
Barth v. Donaldson Company

Labor Terminated District Court, N.D. IowaNo. 6:94-cv-02087Filed 12/28/1994
Quick v. Donaldson Co Inc

Civil Rights Terminated District Court, S.D. IowaNo. 4:94-cv-80093Filed 02/08/1994
Quick v. Donaldson Co., Inc

Civil Rights Terminated District Court, S.D. IowaNo. 4-94-CV-20093Filed 02/08/1994
Nelson Industries, Inc v. Donaldson Company, Inc

Patent Terminated District Court, W.D. WisconsinNo. 3:93-cv-00368Filed 06/01/1993

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