Commissioner of Inland Revenue v Murray Equipment Limited - [1966] NZLR 360

Income tax — Deductions — Moneys expended in contesting third party's application for a patent — Grant of such patent likely to affect taxpayer's business adversely — Whether expenditure of revenue or of capital nature — Whether exclusively incurred in production of assessable income — Whether deductible — Land and Income Tax Act 1954, ss. 110, 111 (2), 112 (a).