term:

Scrivener

scrivener n

[Middle English, alteration of scriveyn, from Anglo-French escrivein, ultimately from Latin scriba public record keeper, from scribere to write]
: a professional or public copyist or writer of official or formal documents (as deeds or contracts)

Source: Merriam-Webster's Dictionary of Law ©1996. Merriam-Webster, Incorporated. Published under license with Merriam-Webster, Incorporated.