[FoxInSocks]

Home coffee makers typically brew coffee at about 135-150 degrees.

That’s not exactly true. It’s not really regulated, but the grounds should be brewed with water at 195—205 degrees. An appropriate serving temperature is after the coffee has cooled to 135, 140, 150, maybe even up to 160. My cup right now is 140. :-)

[DJ MacWoW]

The point is that it wasn't a frivilous lawsuit but McDonalds and the press did damage control and people bought it.

Find Law has an article about the case but this was a short view with facts.

Adam Ruins Everything - The Truth About the McDonald's Coffee Lawsuit