History of US Software Patents

In 1981, the US legal system would not uphold any software patent. This rule was so strict, that even including computerization as part of an overall process could lead to a patent being rejected by the patent examiner and by the Patent and Trademark Office Board of Appeals. Exactly that kind of rejection led to the US Supreme Court case of Diamond v. Diehr, 450 U. S. 175 (1981).

In Part IV, the court