'Wonder Years' Star Olivia d'Abo Music Producer Hubby Pulls Plug on Marriage

11/17/2012 5:45 AM PST

'Wonder Years' Star Olivia d'Abo & Music Producer Patrick Leonard -- Pull Plug On Marriage

The wonder years are over for "Wonder Years" star Olivia d'Abo and mega music producer Patrick Leonard ... the couple is calling it quits on their marriage, TMZ has learned.

Patrick -- who produced some of Madonna's biggest hits, i.e. "Like a Prayer," "Cherish," "Who's That Girl," you get the idea -- filed the docs in Los Angeles County Superior Court last week ... citing irreconcilable differences.

The couple married in August 2002. According to the docs, the couple has been on the rocks for over a year ... Patrick listed the date of separation as August 2011. 

Patrick and Olivia (best known as Kevin Arnold's hippie sister Karen in "The Wonder Years") have no minor children together and Patrick is asking the court to deny spousal support.