Sec. 15.062.  COUNTERCLAIMS, CROSS CLAIMS, AND THIRD-PARTY CLAIMS.  (a)  Venue of the main action shall establish venue of a counterclaim, cross claim, or third-party claim properly joined under the Texas Rules of Civil Procedure or any applicable statute.
(b)  If an original defendant properly joins a third-party defendant, venue shall be proper for a claim arising out of the same transaction, occurrence, or series of transactions or occurrences by the plaintiff against the third-party defendant if the claim arises out of the subject matter of the plaintiff's claim against the original defendant.
Acts 1985, 69th Leg., ch. 959, Sec. 1, eff. Sept. 1, 1985.  Amended by Acts 1995, 74th Leg., ch. 138, Sec. 4, eff. Aug. 28, 1995.