A Swiss compan), Ciba Ltd. of Basle, carried on ~he business of selling its products in India, through a subsidiary called Ciba (India) Ltd. Afler the incorporation of the e the activities of the Swiss Co. in India were bifurcated : the pharmaceutical section was taken over by rbe assessee Ciba of India Ltd. and the other Jines of business were continued by Ciba (India) Ltd. An agreement was entered into between the Sv.·iss Co. and the asscssee for providing the la:ter with technical assistance for running the business. The SY:iss Co., which was continually carrying on research had agreed to make the results available to rbe assessee. and the assessee was expressly prohibited from divulging confidential information to thir.d partie<; without the consent f the Swiss Co. A li'.'Cnce was granted to the assessce to use the Swiss co·s patents and trade marks in India. The licence was to be for a period of 5 years liable to be terminated in certain eventualities even before the expiry of that period. It was subject :o rights actually granted or which may be granted after the date of the agreement to others. In consideration of the right to receive scientific and technical assistance the assee stipulated to make certain recurrent contributiOns deipcndent upn the sales and only for the period of the agreement. 'Pur.mant to this agreemcll!, the assessce paid diverse sums of money to the Swiss Co. and claimed them as admis&ible deductions either under s. 10(2) (xii) or s. 10(2) (xv) of the Indian Income-OJ< Act, 1922, in proceedings for assessment to tax. The Swiss Co. had also en:ered into an agreement with May and Baker Ltd. of England, who were also carrying on business as pbarroaceutieal manufacturers in India. By that agreement the two comp•nies nrutually agreed to grant to one another a non-exclusive licence in respect ot · certain products in different countries including India. By cl. 5 of the agreement the two companies agrocd to take all necessary •tel" to defend patents granted to or applied for in respect of th00e products against infringement, and agreed to share equally all costs incurred. In a suit insti:uted by May and Baker against Mis. Boots Druit Co. alleging that the latter· has infringed the Indian patents of the plaintiffs. May and Baker had co incur certain costs and the Swiss Co. paid its share to May and Ba);er as per the terms of cl. 5 of the agreement. The as.sesoee reimbursed that amount to the Swiss Co. and claimed it as a permissible deduction under s. 10(2) (xv) in proceedings for assessment to tax. The High Court, on reference, held in favour of the ~ that the first claim .was an admissible deduction under s. 10(2)(xv) but not under s. 10(2)(xii), and held that the =ond claim was not a permissible deduction. Jn. appeals, by the Commissioner of Incomc<ax and the assessec, HELD : (I) Expenditure (not being in the nature of capital expenditure) laid out or expended on scientifio rtsearch relating to the busiaess