non obstante

American Heritage® Dictionary of the English Language, Fourth Edition

1. prep. Notwithstanding.

Century Dictionary and Cyclopedia

1. n. Notwithstanding; in opposition to what has been stated or admitted or is to be stated or admitted. The most common use of the words is to denote a clause, formerly frequent in English statutes and letters patent, importing a license from the sovereign to do a thing which at common law might be lawfully done, but being restrained by act of Parliament could not be done without such license.

Wiktionary

1. n. law A clause in old English statutes and letters patent, designating a licence from the crown to do a thing notwithstanding any laws to the contrary.

GNU Webster's 1913

1. Notwithstanding; in opposition to, or in spite of, what has been stated, or is to be stated or admitted.
2. (Law) A clause in old English statutes and letters patent, importing a license from the crown to do a thing notwithstanding any statute to the contrary. This dispensing power was abolished by the Bill of Rights.