That was VERY early on where they tried to sue them. At least, that's what I hear. I mean, why would ANYONE care about a show from 20 years ago if they weren't fans?The story I heard was that they were sued by Sid and Marty Kroft who claimed that the McDonaldland universe was too similar to HR Puffenstuf.
Grimace, Birdy, and Hamburgaler were victims of changes in marketing. Sometime in the 90's they played the EXTREEEEEEEEEME card, and then it seemed that they made the commercials appeal to older and older kids. Ronald disappeared, reappeared, and disappeared again. Now it's some weird campaign with UGLY CGI characters that are supposed to look quirky...
Now, they're victims of commercials=BAD garbage and half butt parental groups that are seeking bandaid solutions to a media frenzied "epidemic." I'm not denying there is a problem at all, but it's got very little to do with cartoon mascots.
Seriously, I miss FUN cereals. now everything has to have huge fiber contents, because kid's have to eat like constipated 50 year olds with an ulcer. it SUCKS to be a kid, especially today. The song freakin' says "A Cookie is a Sometimes Food" and no one's listening.
Still, I miss Grimace and Captain Cook and Hamburgaler and all that. I have all these old toys with them.