Supreme Court of Japan

Grand Bench ruling on the constitutionality of the 2025 general election results.

Case Requesting Confirmation of Obligation to Investigate Biological Parent, etc. (Reiwa 3 (Wa) 28700)
  1. Case Requesting Confirmation of Obligation to Investigate Biological Parent, etc. (Reiwa 3 (Wa) 28700)
  2. Jurisdiction: Japan (2021 (initial filing), 2025 (Supreme Court judgment))
  3. Original Case: 令和3(ワ)28700 生物学上の親調査義務確認等請求事件
  4. DefendantsThe State of JapanPlaintiffsAnonymous Plaintiff (A)Defense AttorneysCounsel for the State of JapanPlaintiff AttorneysPlaintiff's Legal TeamJudgesSupreme Court of Japan (Grand Bench) Presiding JudgeInstitutionsTokyo District CourtTokyo High CourtSupreme Court of Japan
  5. Case Tags: Assisted Reproduction;Right to Know;State Liability;Supreme Court of Japan
令和7(行ケ)2 人口比例選挙請求事件
  1. 令和7(行ケ)2 人口比例選挙請求事件
  2. Jurisdiction: Japan (2025-10-26)
  3. DefendantsCentral Election Management CouncilPlaintiffsHiroyuki UewakiKaoru InoueJudgesYukihiko ImaizakiInstitutionsSupreme Court of JapanTokyo High CourtCentral Election Management Council
  4. Case Tags: Constitutional Litigation;Vote Value Disparity;Supreme Court of Japan;Electoral Reform