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§ 152.83 Definition of exclusive use study.
A study is an exclusive use study if it meets the conditions of either paragraph (a) or paragraph (b) of this section.
(a) Initial exclusive use period. A study submitted to support the registration of a product containing a new active ingredient (new chemical) or a new combination of active ingredients (new combination) is an exclusive use study if all the following conditions are met:
(1) The study pertains to a new active ingredient (new chemical) or new combination of active ingredients (new combination) first registered after September 30, 1978.