B.J. Interruptus — ‘Deep Throat’ Owner Sues to Block ‘Lovelace’

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The production company that owns the legendary, XXX movie, "Deep Throat" is suing the producers of the new movie "Lovelace" ... trying to block its release -- no pun intended.

Arrow Productions -- which owns the copyright to the most famous porn flick ever -- is crying foul play because "Lovelace" includes 3 scenes from the seminal skin flick -- no pun intended.

According to the lawsuit -- obtained by TMZ -- Arrow originally allowed producers of a similar film called "Inferno" to use scenes from the porn.  Problem was -- funding for "Inferno" dried up.  That's when the plan for "Lovelace" was hatched, but Arrow says it didn't give permission for that project.

As for the money shot -- Arrow wants $10 mil, and an order blocking release of the movie.