Appeal No. 2003-2017 Page 13
Application No. 09/802,116
utility. See Brenner, 383 U.S. at 530, 148 USPQ at 694. Thus, not every “use”
that can be asserted will be sufficient to satisfy § 101. For example, the steroid
compound at issue in Brenner was useful as a possible object of scientific
inquiry, and the polypropylene claimed in Ziegler was useful for pressing into a
flexible film, yet both lacked sufficient utility to satisfy § 101. See Brenner, 383
U.S. at 529, 148 USPQ at 696; Ziegler, 992 F.2d at 1203, 26 USPQ2d at 1605.
Rather than setting a de minimis standard, § 101 requires a utility that is
“substantial”, i.e., one that provides a specific benefit in currently available form.
Brenner, 383 U.S. at 534-35, 148 USPQ at 695. This standard has been found
to be met by pharmaceutical compositions shown to be useful in mouse models
and in humans for treating acute myeloblastic leukemia (Jolles, 628 F.2d at
1327-28, 206 USPQ at 891); by evidence showing successful in vitro testing
supplemented by similar in vitro and in vivo activities of structurally similar
compounds (Cross, 753 F.2d at 1051, 224 USPQ at 748); and by evidence
showing in vivo antitumor activity in mice, combined with a disclosure that the
claimed compounds had higher antitumor activity than a related compound
known to have antitumor activity (Brana, 51 F.3d at 1567, 34 USPQ2d at 1442).
By contrast, Brenner’s standard has been interpreted to mean that “vague,
general disclosures or arguments of ‘useful in research’ or ‘useful as building
blocks of value to the researcher’” would not satisfy § 101. See Kirk, 376 F.2d at
945, 153 USPQ at 55 (interpreting Brenner). Likewise, a disclosure of a “plastic-
like” polypropylene capable of being pressed into a flexible film was held to show
that the applicant was “at best . . . on the way to discovering a practical utility for
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