General Court 18 September 2008, Case T-47/05: Judgment of the Court of First Instance of 18 September 2008 — Angé Serrano and Others v Parliament (Staff case — Officials — Success in internal competitions for change of category under the Staff Regulations — Entry into force of the new Staff Regulations — Transitory rules for classification in grade — Changes to levels of hierarchy under the old Staff Regulations — Admissibility — Plea of illegality — Acquired rights — Legitimate expectations — Proportionality — Equal treatment — Principle of sound administration and duty of care)

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