The referred law: https://www.law.cornell.edu/uscode/text/17/102 https://www.law.cornell.edu/uscode/text/17/102 Software interfaces look to me like a "method o

The referred law: https://www.law.cornell.edu/uscode/text/17/102 https://www.law.cornell.edu/uscode/text/17/102 Software interfaces look to me like a "method of operation", only the implementation (the lines of code to run the interface) is subject to copyright.