https://www.taxtmi.com/circulars?id=10306 Deduction for capital expenditure on patent and copyright acquisition is allowed as amortisation over fourteen years or the unexpired life. If such amortisation appears to have been erroneously allowed, officers must not disallow it in a later year until proceedings to modify the year of allowance are initiated by appropriate rectification, revision or reopening procedures; if modification of the year of allowance is not possible, adjustments may be made in subsequent years' assessments. en-us Fri, 20 Dec 1974 00:00:00 +0530 Mon, 13 Jun 2011 14:55:00 +0530 TaxTMI RSS Generator https://www.taxtmi.com/circulars?id=10306 Deduction for capital expenditure on patent and copyright acquisition is allowed as amortisation over fourteen years or the unexpired life. If such amortisation appears to have been erroneously allowed, officers must not disallow it in a later year until proceedings to modify the year of allowance are initiated by appropriate rectification, revision or reopening procedures; if modification of the year of allowance is not possible, adjustments may be made in subsequent years' assessments. Circulars Income Tax Fri, 20 Dec 1974 00:00:00 +0530 https://www.taxtmi.com/circulars?id=10306