In Case Of Amendment To A Patent Specification, The Invention Before & After Amendment Need Not Be Identical
Case: Nippon A&L Inc. V. The Controller Of Patents
Coram: Justice Pratibha M. Singh
Case No.: C.A.(COMM.IPD-PAT) 11/2022
Court Observation: “It is common understanding in the field of patents that product claims are much broader claims than process claims. A product claim, if granted, confers a monopoly on the patentee for the product itself, irrespective of the process by which the said product could have been made. However, in the case of a process claim, the exclusivity or the monopoly is restricted to the manner/method by which a particular product is manufactured and if the same product is manufactured or achieved through a different process/method, the exclusivity of the patentee cannot usually extend to such different process or to the product manufactured by the different process. When there are ‘product by process’ claims, however, the extent of monopoly depends upon the reading of the claims in each case.”
“When this standard, as contemplated by the Ayyangar Committee Report, is applied to Section 59 of the Act as it stands today, it becomes clear that amendments to a patent specification or claims prior to grant ought to be construed more liberally rather than narrowly. The purport and spirit of Article 123 of the European Patent Convention is not too different. In effect, the legislative material and the statutory provisions require that nothing new should be permitted to be inserted in the specification or claims. So long as the invention is disclosed in the specification and the claims are being restricted to the disclosures already made in the specification, the amendment ought not be rejected, especially, at the stage of examination prior to grant.”
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