What do you mean by 'new article' under the Industries (Development and Regulation) Act, 1951?

As per Section 3(dd) of the Industries (Development and Regulation) Act, 1951 new article in relation to an industrial undertaking which is registered or in respect of which a licence or permission has been issued under the Act means: any article which falls under an item in the First Schedule other than the item under which articles ordinarily manufactured or produced in the industrial undertaking at the date of registration or issue of the licence or permission as the case may be, fall; any article which bears a mark as defined in the Trade Marks Act or which is subject of a patent, if at the date of registration or issue of the licence or permission, as the case may be, the industrial undertaking was not manufacturing or producing such article bearing that mark or which is the subject of that patent.