In the mid-1990s, the PTO decided that it would never issue another patent to inventor Gilbert P. Hyatt. After delaying action on his pending applications for years, the PTO changed course and threw them into administrative purgatory, expecting to wait out Hyatt until he gives up or dies. Instead, he filed suit against the agency.
Read the complaint:
Hyatt v. PTO – Redacted Complaint
Update: Why the redactions? Ask the PTO.