What to send to third party defendants the entire lawsuit or just their portion
2 Answers from Attorneys
You must serve them with the Complaint in its entirety.
Agreed but moreover if your liability could rest on theirs, you'll need to join them in the lawsuit if they aren't already parties to it. If they are, you may need to file a "cross complaint". Maybe for liability, or outright indemnity if it's a contract matter and you have the right kind of contract.....