TrafFix Devices Inc. v. Marketing Displays Inc.

Marketing Displays, Inc. (MDI) held utility patents for a "dual-spring design" mechanism that keeps temporary road and other outdoor signs upright in wind. After the patents expired, TrafFix Devices, Inc. began marketing sign stands with a dual-spring mechanism copied from MDI's design. MDI brought suit under the Trademark Act of 1964 for, among other things, trade dress infringement. MDA claimed that its sign stands were recognizable to buyers and users because the patented design was visible. In granting summary judgement for TrafFix, the District Court concluded that MDI had not established a "secondary meaning," or that consumers did not associate the look of the dual-spring design with MDI. The court also found that there could be no trade dress protection for the design because it was functional. In reversing, the Court of Appeals suggested that the District Court committed legal error by looking only to the dual-spring design when evaluating MDI's trade dress because a competitor had to find some way to hide the design or otherwise set it apart from MDI's and noted the issue whether an expired utility patent forecloses the possibility of trade dress protection in the product's design.