Tinker v. Des Moines didn't really strengthen any amendments. The case involved an application of the First Amendment protection of free speech. It strengthened individual rights.
Case Citation:
Tinker v. Des Moines, 393 US 503 (1969)
There were no subsequent appeals of Tinker v. Des Moines,(1969). Once the US Supreme Court has rendered its opinion, the case becomes res judicata, or legally concluded, and no further action can be taken.
Case Citation:
Tinker v. Des Moines, 393 US 503 (1969)
To read more about Tinker v. Des Moines and similar cases, see Related Questions, below.
The majority opinion
The summary APEX
majority opinion