Under Texas Finance Code 397.307(c), a debt collector is not supposed to sue you once the statute of limitations has passed. The statute of limitations on debt in Texas is four years. They have four years to bring a lawsuit; otherwise, the debt becomes "time-barred."
Time-barred debt is old debt that a debt collector cannot sue you to collect, as it has reached the statute of limitations, but they may still attempt to collect. Texas Civil Practice and Remedies Code 16.004 controls the statute of limitations on debt in Texas. And under Texas Finance Code 397.307(c), a debt collector is not supposed to sue you once the statute of limitations has passed.