Income Tax Refund

Hi, this is shiv om I have a query on income tax refund.

A Govt Agency Deducted TDS on a Firms income and the TDS certificate remained in the custody of the Govt Agency as there was dispute between the parties which was judicially solved after a period of 8 years. Then the agency released the TDS certificate. Now can the firm cliam refund of the same. As per the provisions of the Income Tax Act it can be claimed within a period of one year only.