Legal Question in Real Estate Law in California

The answer is no. This is not a novel defense to foreclosure; it has been tried over and over and it doesn't work. In California, a foreclosing lender does not need to produce the original note.

A note is merely evidence of a debt. It is not a magic amulet without which the lender has no right to repayment. If necessary the lender can prove the debt in several dozen other ways, the simplest being a copy of the note along with evidence that they have made a reasonable and diligent search for the original and it has been lost.