Patent & IP news archive

Complaint for Patent Infringement
Civil Action No. 4:12-cv-00725; no judge yet assigned.
Filed on Nov. 16, 2012 in the U.S. District Court for the Eastern District of Texas;

Defendants

Patents in case

  • 5,475,713: “Shaped signal spaces in a simultaneous voice and data system” by Bremer et. al. Prosecuted by Opalach; Joseph J.. Includes 14 claims (5 indep.). Was application 08/076,530. Granted 12/12/1995.
  • 5,475,691: “Voice activated date rate change in simultaneous voice and data transmission” by Chapman et. al. Prosecuted by Opalach; Joseph J.. Includes 11 claims (5 indep.). Was application 08/151,677. Granted 12/12/1995.
  • 5,436,930: “Simultaneous analog and digital communications with a selection of different signal point constellations based on.” by Bremer et. al. Prosecuted by Malvone; Christopher N.. Includes 22 claims (1 indep.). Was application 08/076,516. Granted 7/25/1995.
  • 5,559,791: “Companding of voice signal for simultaneous voice and data transmission” by Bremer et. al. Prosecuted by Opalach; Joseph J.. Includes 18 claims (10 indep.). Was application 08/076,506. Granted 9/24/1996.

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Case documents (PDF)

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