Company · Metal Fabrication & Hardware

Parker Hannifin Corporation

Federal civil lawsuits naming Parker Hannifin Corporation, a Metal Fabrication & Hardware company.

Public CompanyMetal Fabrication & Hardware

Ticker: NYSE: PH
Business: Miscellaneous Fabricated Metal Products
Headquarters: Cleveland, OH
Incorporated in: Ohio
SEC CIK: 76334

Parker Hannifin Corporation is a public company in Miscellaneous Fabricated Metal Products, based in Cleveland, OH (traded on NYSE as PH, incorporated in Ohio). It appears in 302 federal civil lawsuits in this index, most often as a defendant (235 of 302). These cases are most often Civil Rights and Contract matters, filed between 1990 and 2025, most frequently in District Court, N.D. Ohio. The most common causes of action are Patent Infringement, Breach of Contract, and Employment. Frequent opposing parties include Parker-Hannifin Corp, Parker Hannifin Corp, and Parker-Hannifin Corporation.

302

Lawsuits

235

As Defendant

As Plaintiff

Open

300

Terminated

1990–2025

Span

9 mo

Median Duration

8.4 cases/yrPredominantly defendant · 78%Activity declining

Cases by State

HI · 1

Open Cases Over Time

1990peak 12 open2025

Case Types Over Time

19902025

Civil RightsContractPatentLaborProduct Liability

Filings by Year

19902025

Case Types filter →

Personal Property / Fraud16

Where Filed filter →

Frequent Opposing Parties

Filtered Patent Clear

45 Cases — Newest First

Parker-Hannifin Corp v. Faster, Inc

Patent Terminated District Court, N.D. OhioNo. 3:23-cv-01704Filed 08/30/2023
Heritage Ip LLC v. Parker-Hannifin Corporation

Patent Terminated District Court, D. DelawareNo. 1:21-cv-01839Filed 12/28/2021
Forutome Ip LLC v. Parker-Hannifin Corporation

Patent Terminated District Court, N.D. IllinoisNo. 1:20-cv-03076Filed 05/22/2020
Blueprint Ip Solutions LLC v. Parker-Hannifin Corporation

Patent Terminated District Court, N.D. OhioNo. 1:20-cv-00197Filed 01/29/2020
Mahle Filtersysteme Gmbh v. Parker-Hannifin Corporation

Patent Terminated District Court, E.D. MichiganNo. 2:19-cv-11347Filed 05/07/2019
Parker-Hannifin Corporation v. Optotune Switzerland Ag

Patent Terminated District Court, D. New JerseyNo. 1:18-cv-01751Filed 02/07/2018
Parker-Hannifin Corporation v. Cummins Inc

Patent Terminated District Court, N.D. OhioNo. 1:16-cv-00099Filed 01/15/2016
Liberty Insurance Corporation v. Parker-Hannifin Corporation

Patent Terminated District Court, E.D. TexasNo. 4:15-cv-00635Filed 09/17/2015
Brookins v. Parker-Hannifin Corporation

Patent Terminated District Court, D. North DakotaNo. 3:15-cv-00065Filed 07/09/2015
Parker-Hannifin Corporation v. Clarcor Inc

Patent Terminated District Court, N.D. OhioNo. 1:15-cv-00413Filed 03/03/2015
Tex Pat, LLC v. Parker-Hannifin Corporation

Patent Terminated District Court, E.D. TexasNo. 5:10-cv-00202Filed 12/02/2010
Parker-Hannifin Corporation v. Champion Laboratories, Inc

Patent Terminated District Court, N.D. OhioNo. 1:10-cv-01249Filed 06/03/2010
Parker-Hannifin Corporation v. Baldwin Filters, Inc

Patent Terminated District Court, N.D. OhioNo. 1:08-cv-01846Filed 08/01/2008
Berquist Company, The v. Parker-Hannifin Corp

Patent Terminated District Court, D. MinnesotaNo. 0:07-cv-03932Filed 09/10/2007
Parker Hannifin Corporation v. Baldwin Filters, Inc

Patent Terminated District Court, N.D. OhioNo. 1:07-cv-01709Filed 06/08/2007
Parker-Hannifin Corporation v. Schlegel Electronic Materials Inc

Patent Terminated District Court, D. DelawareNo. 1:07-cv-00266Filed 05/16/2007
Parker Hannifin Corporation v. Champion Laboratories, Inc

Patent Terminated District Court, N.D. OhioNo. 1:07-cv-01375Filed 05/11/2007
Parker-Hannifin Corporation v. Seiren Co., Ltd

Patent Terminated District Court, D. DelawareNo. 1:07-cv-00104Filed 02/22/2007
Parker-Hannifin Corporation v. Baldwin Filters, Inc

Patent Terminated District Court, N.D. OhioNo. 1:07-cv-00238Filed 01/29/2007
Parker-Hannifin Corporation v. Shieldex Trading Gmbh

Patent Terminated District Court, D. DelawareNo. 1:06-cv-00754Filed 12/08/2006
Parker-Hannifin Corporation v. Kitagawa Industries Co. Ltd

Patent Terminated District Court, D. DelawareNo. 1:06-cv-00756Filed 12/08/2006
Parker-Hannifin Corporation v. S-Tech Co. Ltd

Patent Terminated District Court, D. DelawareNo. 1:06-cv-00755Filed 12/08/2006
Parker-Hannifin Corporation v. Holland Shielding Systems B.V

Patent Terminated District Court, D. DelawareNo. 1:06-cv-00753Filed 12/08/2006
Parker-Hannifin Corporation v. Zippertubing (Japan) Ltd

Patent Terminated District Court, D. DelawareNo. 1:06-cv-00751Filed 12/08/2006
Parker-Hannifin Corporation v. Shielding Express Inc

Patent Terminated District Court, D. DelawareNo. 1:06-cv-00750Filed 12/08/2006
Parker-Hannifin Corporation v. Tennrich International Corporation

Patent Terminated District Court, D. DelawareNo. 1:06-cv-00752Filed 12/08/2006
Parker-Hannifin Corp v. Puralator Filters NA LLC

Patent Terminated District Court, N.D. OhioNo. 1:06-cv-02615Filed 10/27/2006
Parker-Hannifin Corporation v. Hydraforce, Inc

Patent Terminated District Court, N.D. IllinoisNo. 1:06-cv-03333Filed 06/20/2006
Lietz v. Parker-Hannifin Corporation

Patent Terminated District Court, E.D. MissouriNo. 4:06-cv-00880Filed 06/06/2006
Hydro-Gear Limited Partnership v. Parker-Hannifin Corporation

Patent Terminated District Court, N.D. IllinoisNo. 1:06-cv-02520Filed 05/04/2006
Parker-Hannifin Corporation v. Delavan, Inc

Patent Terminated District Court, N.D. OhioNo. 1:06-cv-01063Filed 05/01/2006
Parker-Hannifin Corporation v. Hydraforce, Inc

Patent Terminated District Court, N.D. IllinoisNo. 1:05-cv-01002Filed 02/18/2005
Parker-Hannifin Corp v. Delta Power Co

Patent Terminated District Court, N.D. IllinoisNo. 1:03-cv-08804Filed 12/05/2003
Fleetguard, Inc v. Parker-Hannifin Corporation

Patent Terminated District Court, W.D. WisconsinNo. 3:03-cv-00609Filed 10/27/2003
Omegaflex, Inc v. Parker Hannifin

Patent Terminated District Court, D. MassachusettsNo. 3:02-cv-30022Filed 02/11/2002
Davco Tech L L C v. Parker Hannifin Corp

Patent Terminated District Court, E.D. MichiganNo. 2:01-cv-73915Filed 10/16/2001
Eaton Corporation v. Parker-Hannifin Corp

Patent Terminated District Court, D. DelawareNo. 1:00-cv-00751Filed 08/15/2000
Omegaflex, Inc v. Parker Hannifin

Patent Terminated District Court, D. MassachusettsNo. 3:00-cv-30128Filed 07/26/2000
Amesbury Group, Inc v. Parker-Hannifin Corp

Patent Terminated District Court, D. MassachusettsNo. 1:99-cv-11490Filed 07/13/1999
Vanguard Products v. Parker Hannifin Corp

Patent Terminated District Court, D. ConnecticutNo. 3:95-cv-01716Filed 08/17/1995
Trident Ventures v. Parker-Hannifin Corp

Patent Terminated District Court, D. South CarolinaNo. 2:94-cv-03125Filed 11/18/1994
Parker Hannifin Corp v. Advanced Performance

Patent Terminated District Court, E.D. North CarolinaNo. 3:94-cv-00023Filed 03/24/1994
Parker Hannifin Corp v. Turn-Act, Inc

Patent Terminated District Court, N.D. OhioNo. 1:90-cv-00538Filed 03/26/1990
Davco Manufacturing Corp v. Parker-Hannifin Corp

Patent Terminated District Court, N.D. OhioNo. 1:88-cv-00656Filed 03/16/1988
Parker Hannifin Corporation v. Davco Manufacturing Corporation

Patent Terminated District Court, N.D. OhioNo. 1:87-cv-02595Filed 10/02/1987