Prior to June of 2014, the standard for patent review made it nearly impossible to invalidate a patent claim for “indefiniteness” or ambiguity. The U.S. Supreme Court drastically changed that standard in Nautilus, Inc. v. Biosig Instruments, Inc.
Nautilus brought the case before the Supreme Court based on the notion that “the patent system is best served when patent claims are precise, definite, and certain. Ambiguous and indefinite patents stifle competition and encourage unnecessary litigation.” The Supreme Court agreed saying that the ambiguity the lower court used to evaluate the patent would “leave courts and the patent bar at sea without a reliable compass.” In its unanimous decision, the Supreme Court asked the court of appeals to reevaluate whether Nautilus infringed on Biosig’s patent design based on stricter standards.
Although the Nautilus case involved a utility patent, it is suggested by Industrial Design expert, Robert John Anders, that this standard would most likely apply to design patent drawings as well. In a recent article, Mr. Anders posits that the use of break lines or brackets with “indeterminant” measurements could also lead to ambiguity, making design drawings vulnerable to patent infringement challenges.
Read the full article here: Design Patent Drawing Conventions: Break Lines That May Be Fatal
Robert John Anders is a member of the Industrial Designers Society of America and the Human Factors and Ergonomic Society with more than 40 years of professional experience. Mr. Anders has been retained as an Industrial Design Expert for over 17 years.