Legal Opinion
Douglas Dynamics, LLC v. Buyers Products Co.
District Court, W.D. Wisconsin
Decided October 1, 2010No. 09-cv-261-wmcPublishedCited by 5 opinions
1Opinion of the Court
OPINION AND ORDER ON INFRINGEMENT
WILLIAM M. CONLEY, District Judge.
In this patent infringement case, plaintiff Douglas Dynamics, LLC alleges that defendant Buyers Products Company’s snowplow assemblies infringe five of Douglas’s patents covering certain snowplow features. Specifically, Douglas contends that Buyers’ snowplow assemblies infringe (1) Douglas’s three patents covering the mounting of snowplows, United States patents nos. 5,353,530 (the '530 patent), Re. 35,700 (the 700 patent) and 6,944,978 (the '978 patent); (2) its patent covering the hydraulic system used by a snowplow, no.…
2Cases cited32 opinions
- Herbert Markman and Positek, Inc. v. Westview Instruments, Inc. And Althon Enterprises, Inc.Court of Appeals for the Federal Circuit · 1995
- Warner-Jenkinson Co. v. Hilton Davis Chemical Co.Supreme Court of the United States · 1997
- Metro-Goldwyn-Mayer Studios Inc. v. Grokster, Ltd.Supreme Court of the United States · 2005
- Lori David v. Caterpillar, IncorporatedCourt of Appeals for the Seventh Circuit · 2003
- Catalina Marketing International, Inc. v. coolsavings.com, Inc.Court of Appeals for the Federal Circuit · 2002
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3Cited by5 opinions
- Douglas Dynamics, LLC v. Buyers Products Co.Court of Appeals for the Federal Circuit · 2013
- Douglas Dynamics, LLC v. Buyers Products Co.District Court, W.D. Wisconsin · 2014
- Douglas Dynamics, LLC v. Buyers Products Co.Court of Appeals for the Federal Circuit · 2013
- Douglas Dynamics, LLC v. Buyers Products Co.Court of Appeals for the Federal Circuit · 2013
- Wisconsin Alumni Research Foundation v. Apple, Inc.District Court, W.D. Wisconsin · 2015