A bill to amend title 35 of the United States Code, to set federal standards for permissible employee preinvention, and for other purposes.

Amends the patent law to set forth a Federal policy concerning non-Federal employee inventions. Renders unenforceable a preinvention assignment agreement to inventions other than an employment invention. Entitles an employer to a nontransferable nonexclusive license to practice any invention made with a substantial use of that employer's time or resources. Exempts inventions conceived after termination of employment.