Milliken And Company v. Controller Of Patents And Designs & Anr.

When a multinational innovator files for a patent in India, it expects the application to be judged on its own technical merits, not on the shadow of decisions made in foreign jurisdictions. Yet for Milliken and Company, a refusal order revealed a deeper problem: a critical expert statement was brushed aside without proper consideration. This case is a wake-up call for every founder and IP professional who assumes that expert evidence will be weighed fairly, regardless of who provides it.

Milliken and Company, a well-known global enterprise, found itself at odds with the Assistant Controller of Patents and Designs in India after its patent application was refused. The refusal hinged significantly on the treatment of an expert statement submitted by Dr. Nathan A. Mehl, whose technical opinion was central to establishing the invention's novelty and inventive step. Milliken contended that the Controller had failed to properly examine and consider this expert testimony before arriving at the decision to deny the patent. Aggrieved by the refusal order, Milliken escalated the matter by way of appeal, seeking judicial review of the Controller's reasoning and process.

Milliken's primary argument was straightforward but powerful: the Assistant Controller had disregarded a crucial piece of expert evidence. The statement by Dr. Nathan A. Mehl was, according to the appellant, instrumental in demonstrating the technical merits of the invention, and its dismissal without substantive engagement undermined the fairness of the entire examination process. On the other side, the Controller of Patents and Designs stood by the refusal order, with the implicit justification that the expert's affiliation with the applicant and the fact that similar evidence had been rejected by foreign patent offices were sufficient grounds to discount the statement. This created a legal friction centered on a fundamental question: can expert testimony be sidelined merely because of the expert's relationship with the applicant, or because a foreign office reached a different conclusion?

The High Court found merit in Milliken's appeal. The court made it clear that foreign decisions, while they may offer persuasive guidance, are not binding on Indian patent authorities. Each application must be evaluated on its own footing, with due consideration given to all evidence presented, including expert statements. The court held that the refusal could not be sustained merely because the expert was an employee of the applicant or because a foreign patent office had rejected similar evidence. Consequently, the matter was remanded back to the Controller for fresh consideration, with directions to properly evaluate the expert statement by Dr. Nathan A. Mehl and all other relevant materials before issuing a new order.

For founders, inventors, and IP professionals, this case delivers a critical lesson: expert evidence in patent proceedings must be evaluated on its substantive technical merits, not dismissed on procedural or prejudicial grounds. If your expert happens to be affiliated with your company, that alone is not a valid reason to reject their testimony. Likewise, a rejection by a foreign patent office does not automatically seal your fate in India. When filing patent applications, ensure that your expert declarations are robust, technically detailed, and clearly tied to the legal requirements of novelty and inventive step. And if a patent office refuses your application without properly engaging with your expert evidence, remember that judicial review is available to correct such procedural oversights.