Tex. R. Civ. P. 13

The signatures of attorneys or parties constitute a certificate by them that they have read the

pleading, motion, or other paper; that to the best of their knowledge, information, and belief formed

after reasonable inquiry the instrument is not groundless and brought in bad faith or groundless

and brought for the purpose of harassment. Attorneys or parties who shall bring a fictitious suit as

an experiment to get an opinion of the court, or who shall file any fictitious pleading in a cause for

such a purpose, or shall make statements in pleading which they know to be groundless and false,

for the purpose of securing a delay of the trial of the cause, shall be held guilty of a contempt. If a

pleading, motion or other paper is signed in violation of this rule, the court, upon motion or upon

its own initiative, after notice and hearing, shall impose an appropriate sanction available under

Rule 215-2b, upon the person who signed it, a represented party, or both. Courts shall presume

that pleadings, motions, and other papers are filed in good faith. No sanctions under this rule may

be imposed except for good cause, the particulars of which must be stated in the sanction order.

"Groundless" for purposes of this rule means no basis in law or fact and not warranted by good

faith argument for the extension, modification, or reversal of existing law. A general denial does

not constitute a violation of this rule. The amount requested for damages does not constitute a

violation of this rule.