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1952 Act was in replacing the word “art” with the word “process.”  The Supreme Court 
has already concluded that this change did not alter the substantive understanding of 
the statute.  See Diehr, 450 U.S. at 182 (“[A] process has historically enjoyed patent 
protection because it was considered a form of ‘art’ as that term was used in the 1793 
Act.”).   
The House Report accompanying the 1952 bill includes the now-famous 
reference to “anything under the sun made by man”: 
A person may have “invented” a machine or a manufacture, which may 
include anything under the sun made by man, but it is not necessarily 
patentable under section 101 unless the conditions of the title are fulfilled. 
 
H.R. 1923 at 7.  Although this passage has been used by our court in past cases to 
justify a broad interpretation of patentable subject matter, I agree with Judge Mayer that, 
when read in context, the statement undercuts the notion that Congress intended to 
expand the scope of § 101.  See Mayer, J., dissenting op. at 5-6.  It refers to things 
“made by man,” not to methods of organizing human activity.  In this respect, the 
language is reminiscent of the 1799 use of the phrase “something made by the hands of 
man” by Chief Justice Lord Kenyon as a limitation on patentable subject matter under 
the Statute of Monopolies.  The idea that an invention must be “made by man” was 
used to distinguish “a philosophical principle only, neither organized or capable of being 
organized” from a patentable manufacture.  Hornblower, 8 T.R. at 98.  Lord Kenyon 
held that the patent before him was not based on a mere principle, but was rather “a 
patent for a manufacture, which I understand to be something made by the hands of 
man.”  Id. at 98 (emphases added); accord American Fruit Growers v. Brogdex Co., 283 
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