In the case of Dickinson v. Petroleum Conversion Corp., the U.S. Supreme Court ruled in 1949 that a patent holder could not be charged with misuse simply for choosing to refrain from using their patent during wartime, when government restrictions limited its profitability. The court held that such non-use did not constitute an attempt to extend the scope or term of the patent monopoly and thus was not a misuse under antitrust law. This decision reversed a lower court ruling which had found against Dickinson, who owned patents on certain processes for producing high-octane gasoline but chose not to use them during World War II due to price controls imposed by the federal government.

In the dissenting opinion for Dickinson v. Petroleum Conversion Corp., it was argued that the majority's decision to uphold a patent on an industrial process, despite its use during World War II by government order, contradicted established legal principles and could have negative implications for future wartime production efforts. The dissent emphasized that under traditional patent law, any invention used or sold publicly for more than two years before a patent application is filed becomes part of public domain and cannot be patented. In this case, the patented process had been in public use under government orders during WWII well beyond this two-year period before the application was made. Therefore, according to these justices' interpretation of existing laws and precedents regarding patents and their expiration dates due to prior usage or sales activities exceeding statutory limits set forth in relevant legislation governing such matters at hand here; they believed it should not have been granted protection as an exclusive right held only by its inventor(s) but instead considered common knowledge freely available to all interested parties without requiring payment of licensing fees or other forms of compensation typically associated with proprietary technologies protected against unauthorized uses through issuance of valid patents enforceable within U.S jurisdictional boundaries.