Litigate (verb)

1. To engage in a legal dispute or lawsuit.
2. To take legal action.
3. To argue or plead a case in a court of law.

Origin:

From latin litigare meaning "to dispute".

Examples:

1. The company decided to litigate the matter in court.
2. The attorney advised his client to litigate the case.
3. The company is litigating the case against its former employee.
4. The parties agreed to litigate their dispute in arbitration.
5. The litigants litigated the case for several years before reaching a settlement.