Jackson Walker Obtains Judgment Invalidating Design Patent

March 3, 2016 | Client Results



Jackson Walker successfully represented its client, Summit Energy Services, in obtaining a judgment of invalidity against design patent D664,568, which was asserted by Top-Co Inc. Following a claim construction hearing in which inventor testimony and descriptions of the design features in Top-Co’s own marketing literature were presented, the Court found that the claimed casing centralizer design had no ornamental features.

In a separately filed lawsuit, Jackson Walker previously invalidated utility patent 6,435,275 in related litigation brought by Top-Co and Downhole Products.

Jackson Walker attorneys Chris Rourk, John Jackson, Sara Chelette, John Edwards and Amanda Zimmerman represented Summit Energy Services.