Earliest reference I can find is to 1931 and a game call Lexio by Alfred Butts that evolved into what we now know as SCRABBLE®
Wikipedia says (accurately or not, I'm not sure as it looks like Spear & Sons has been acquired by Mattel)
The name Scrabble
is a trademark
of Hasbro, Inc.
in the US
and of J. W. Spear & Sons
PLC elsewhere. Scrabble
was a trademark of Murfett Regency in Australia
, until 1993
when it was acquired by Spear. The game is also known as Alfapet
and Palabras Cruzadas
So it the name the issue for ownership, or is it the idea?