If you want to appeal against a civic licence decision, you must do this within 28 days of the date of the decision. If you wait longer than 28 days, your appeal might be not considered.
Anyone to whom a Licensing Authority is obliged to give notice of a licensing decision (both objectors and applicants) can appeal to the Sheriff against that decision by summary application. The Sheriff could uphold an appeal only if the authority erred in law, based their decision on an incorrect material fact, acted contrary to natural justice, or otherwise exercised their decision in an unreasonable manner. If you are in a position where you are considering an appeal to the Sheriff, you should consult a Solicitor or Citizens Advice Bureau for further information.