Tex. Bus. & Com. Code § 16.004
(a) A mark is considered to be abandoned when:
(c) Nonuse of a mark as described by Subsection (a)(1) for three consecutive years constitutes prima facie evidence of the mark's abandonment.
Acts 2011, 82nd Leg., R.S., Ch. 563 (H.B. 3141), Sec. 1, eff. September 1, 2012.