Patent & IP news archive

Complaint for Declaratory Judgement
Civil Action No. 2:13-cv-10065-AJT-PJK, the Hon. Arthur J. Tarnow presiding.
Filed on Jan. 8, 2013 in the U.S. District Court for the Eastern District of Michigan;

Plaintiffs

v.
Cequent Performance Products
McDonald Hopkins;
Matthew J. Cavanagh
David B. Cupar

Patents in case

  • 6,722,686: “Coupler locking device and method” by Koy. Prosecuted by Earp, III; Robert H. McDonald Hopkins Co., LPA. Includes 18 claims (6 indep.). Was application 10/136,044. Granted 4/20/2004.
  • 6,672,115: “Locking device with convertible shank” by Wyers. Prosecuted by Martin; Timothy J. Henson; Michael R. Gegick; Rebecca A.. Includes 27 claims (7 indep.). Was application 09/556,637. Filed 4/24/2000 & Granted 1/6/2004.
  • 7,121,121: “Locking device for trailer hitches and method therefor” by Wyers. Prosecuted by Martin; Timothy J. Henson; Michael R. Carpenter; John W.. Includes 18 claims (4 indep.). Was application 10/451,928. Granted 10/17/2006.

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Case documents (PDF)

Fig. 1 from 6,672,115

6,672,115 figure 1
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