Company · Pharmaceuticals & Biotechnology

Neogen Corporation

Federal civil lawsuits naming Neogen Corporation, a Pharmaceuticals & Biotechnology company.

Public CompanyPharmaceuticals & Biotechnology

Ticker: Nasdaq: NEOG
Business: In Vitro & In Vivo Diagnostic Substances
Headquarters: Lansing, MI
Incorporated in: Michigan
SEC CIK: 711377

Neogen Corporation is a public company in In Vitro & In Vivo Diagnostic Substances, based in Lansing, MI (traded on Nasdaq as NEOG, incorporated in Michigan). It appears in 39 federal civil lawsuits in this index, most often as a defendant (20 of 39). These cases are most often Contract and Securities / Commodities matters, filed between 1994 and 2025, most frequently in District Court, W.D. Michigan. The most common causes of action are Securities, Breach of Contract, and Trademark. Frequent opposing parties include Thompson, Neogen Inc, and Trickey.

Lawsuits

As Defendant

As Plaintiff

Open

Terminated

1994–2025

Span

6 mo

Median Duration

1.2 cases/yrPredominantly defendant · 51%Contract-heavy · 41%Activity declining

Cases by State

Open Cases Over Time

1994peak 4 open2025

Case Types Over Time

19942025

ContractSecurities / CommoditiesTrademarkPatentCivil Rights

Filings by Year

19942025

Case Types filter →

Contract16

Securities / Commodities8

Where Filed filter →

Frequent Opposing Parties

39 Cases — Newest First

Smith v. Neogen Corporation

Contract Terminated District Court, W.D. MichiganNo. 1:25-cv-00906Filed 08/08/2025
Operating Engineers Construction Industry and Miscellaneous Pension Fund v. Neogen Corporation

Securities / Commodities Open District Court, W.D. MichiganNo. 1:25-cv-00802Filed 07/18/2025
Lawrence v. Neogen Corporation

Securities / Commodities Terminated District Court, S.D. New YorkNo. 1:22-cv-06232Filed 07/22/2022
Pardo v. Neogen Corporation

Securities / Commodities Terminated District Court, D. DelawareNo. 1:22-cv-00435Filed 04/01/2022
Leja v. Neogen Corporation

Securities / Commodities Terminated District Court, E.D. New YorkNo. 1:22-cv-01841Filed 04/01/2022
Waterman v. Neogen Corp

Securities / Commodities Terminated District Court, E.D. PennsylvaniaNo. 2:22-cv-01251Filed 04/01/2022
Hopkins v. Neogen Corp

Securities / Commodities Terminated District Court, E.D. New YorkNo. 1:22-cv-01815Filed 03/31/2022
Snyder v. Neogen Corporation

Securities / Commodities Terminated District Court, S.D. New YorkNo. 1:22-cv-02440Filed 03/25/2022
Neogen Corporation v. Innovative Reproduction Technology, LLC

Contract Terminated District Court, S.D. IowaNo. 4:19-cv-00330Filed 10/10/2019
Neogen Corporation v. Neogen Chemicals Ltd

Trademark Terminated District Court, W.D. MichiganNo. 1:19-cv-00507Filed 06/26/2019
ConSeal International Incorporated v. Neogen Corporation

Contract Terminated District Court, S.D. FloridaNo. 0:19-cv-61242Filed 05/16/2019
Neogen Corporation v. Innovative Reproduction Technology, LLC

Contract Terminated District Court, W.D. MichiganNo. 1:18-cv-00789Filed 07/17/2018
Branhaven, LLC v. Neogen Corporation

Contract Terminated District Court, W.D. MichiganNo. 1:18-cv-00329Filed 03/23/2018
Neogen Corporation v. SenesTech Incorporated

Contract Terminated District Court, D. ArizonaNo. 3:17-cv-08010Filed 01/19/2017
Biolumix, Inc v. Neogen Corporation

Patent Terminated District Court, E.D. MichiganNo. 2:14-cv-10442Filed 01/30/2014
Neogen Corporation v. Eastman Chemical Company

Contract Terminated District Court, W.D. MichiganNo. 1:13-cv-00368Filed 04/03/2013
Neogen Corporation v. Ionian Technologies, Inc

Contract Terminated District Court, W.D. MichiganNo. 1:10-cv-00607Filed 06/28/2010
Neogen Corporation v. BioLumix, Incorporated

Copyright Terminated District Court, E.D. MichiganNo. 2:10-cv-11526Filed 04/15/2010
Magrath v. Neogen Corporation

Trademark Terminated District Court, D. MinnesotaNo. 0:09-cv-00425Filed 02/23/2009
Miller Manufacturing Company v. Neogen Corporation

Trademark Terminated District Court, D. MinnesotaNo. 0:08-cv-01277Filed 05/08/2008
Neogen Corporation v. United States Department of Justice

Federal Tax / Statutory Actions Terminated District Court, E.D. KentuckyNo. 5:05-cv-00506Filed 12/07/2005
Neogen Corporation v. Drug Enforcement Administration

Forfeiture / Penalty Terminated District Court, W.D. MichiganNo. 5:04-cv-00180Filed 10/18/2004
Triple Crown v. Neogen Corporation

Trademark Terminated District Court, D. MinnesotaNo. 0:00-cv-01945Filed 08/16/2000
Neogen Corporation v. St Paul Mercury Ins

Contract Terminated District Court, W.D. MichiganNo. 1:00-cv-00466Filed 06/28/2000
Neogen Corporation v. Munova Corporation, Et Al

Patent Terminated District Court, M.D. FloridaFiled 04/17/2000
Neogen Corporation v. Munova Corporation

Contract Terminated District Court, M.D. FloridaNo. 8:00-cv-00735Filed 04/17/2000
Neogen Corporation v. Neo Gen Screening

Contract Terminated District Court, W.D. MichiganNo. 5:00-cv-00037Filed 04/12/2000
Neogen Corporation v. Trickey

Civil Rights Terminated District Court, S.D. OhioNo. 1:98-mc-00113Filed 10/15/1998
Neogen Corporation v. Idexx Labs

Patent Terminated District Court, W.D. MichiganNo. 5:98-cv-00139Filed 10/13/1998
Edberg v. Neogen Corporation

Patent Terminated District Court, W.D. MichiganNo. 1:98-cv-00728Filed 10/13/1998
Edberg v. Neogen Corp

Patent Terminated District Court, D. ConnecticutNo. 3:98-cv-00717Filed 04/16/1998
Gold Kist, Inc v. Neogen Corporation

Contract Terminated District Court, N.D. GeorgiaNo. 1:96-cv-03345Filed 12/16/1996
Neogen Corporation v. Trickey

Contract Terminated District Court, W.D. MichiganNo. 5:96-cv-00142Filed 08/26/1996
Neogen Corporation v. Vicam

Securities / Commodities Terminated District Court, W.D. MichiganNo. 5:96-cv-00138Filed 08/14/1996
Thompson v. Neogen Inc

Contract Terminated District Court, D. ArizonaNo. 2:95-cv-00387Filed 02/28/1995
Thompson v. Neogen Inc, Et Al

Contract Terminated District Court, D. ArizonaNo. 4:95-cv-387Filed 02/28/1995
Thompson v. Neogen Inc

Contract Terminated District Court, S.D. TexasNo. 4:94-cv-03354Filed 09/29/1994
Neogen Corporation v. Neogen, Inc

Trademark Terminated District Court, W.D. MichiganNo. 5:94-cv-00135Filed 09/19/1994
Neogen Corporation v. Environmental Health

Trademark Terminated District Court, D. KansasNo. 2:94-cv-02153Filed 04/12/1994