In the same way that Google will automatically spell check an email message in Gmail, the company is filing a patent that would let them check if email users are using Gmail to violate the law or policy. It's called the Policy Violation Checker, and it would allow Google to scan messages as people type and prevent them from writing out text that includes "problematic phrases" that "present policy violations, have legal implications, or are otherwise troublesome to a company, business, or individual," according to the patent filing.