One striking case is
Sheryl Crow's
All I wanna do, a blatant copy from
Stealers Wheel's
Stuck in the middle with you.
One case I heard about, but didn't agree with, was Slade's Let's call it quits which was just a standard rocker. Apparently somebody sued them over copyright infringement and won, after which they had to withdraw the single which was already hitting the charts. If that song was a copyright violation so are thousands of songs like it.
For a more creative case of ripping off the elders, see Blur.