A limited liability partnership is an entity separate from its partners.  Corp. Code 16201.  An LLP and one of its partners hired a lawyer to represent the LLP in a lawsuit.  Later, the partner sued the lawyer for malpractice in that representation.  The partner filed suit within the statute of limitations but didn’t amend to add the LLP as a plaintiff in suit until after the limitations period expired.  This decision holds that the partner has no claim because he was not a party to the underlying lawsuit and so suffered no damage directly as a result of the alleged malpractice.  The amendment to add the LLP as a plaintiff did not relate back to the filing of the original complaint because the LLP’s claim was independent of the partner’s.  Where a new plaintiff sues on the same right because of a mere misnomer or failure to name the real party in interest in the original complaint, the amendment adding the proper plaintiff will relate back.  But not so if the amendment adds a new plaintiff suing on a new claim.  Here, the LLP didn’t sue on the partner’s claim but instead brought a new claim that it alone possessed.