EXCLUSIVE: Oksana Goes To Court To Have Legal Ace Admitted To Practice In California

Oksana Grigorieva is going to court on Monday morning in a bid to have her famed first amendment lawyer Martin Garbus admitted to practice law in California, RadarOnline.com has exclusively learned.

Garbus, the defense attorney in the Pentagon Papers, has been unable to formally represent his client in the bitter custody battle with Hollywood actor Mel Gibson.

Garbus' pro hac vice motion -- a legal move that's being opposed by Gibson's camp -- will again be heard before Judge Scott Gordon.

"Oksana is being represented by Daniel Horowitz in the meantime, but it's crucial Martin succeeds in this motion as she faces a critical week in the case beginning from Monday," a source said.

As RadarOnline.com exclusively reported, the Russian musician faces up to three grueling interrogations this week alone.

EXCLUSIVE FIRST PHOTOS: The Injury To Oksana's Teeth

The first of what are expected to be marathon depositions will fall on Mel Gibson's 55th birthday on Monday.

Garbus has defended a host of major names including Robert Redford, Al Pacino and Spike Lee.

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