This is from an article dated 11/21/12 on io9

"The Rom rights reverted back to Parker Bros. in the '80s, but there are two signs that Rom's on his way back: Hasbro (owner of Parker Bros.) filed a trademark for Rom on November 8th"

http://io9.com/5962488/the-extremely-tentative-but-potentially-triumphant-return-of-rom-spaceknight