Historical clue formulations

• Voids — 2026-05-01
• Undoes, in court — 2025-05-24
• Negates — 2017-04-19
• Declares invalid — 2017-01-30
• Makes invalid — 2009-04-01
• Declares void — 2008-12-16
• Cancels — 2004-02-01
• Invalidates — 1996-09-29
• Voids — 1995-08-15