Order Quashed for Absence of Reasoned Technical Analysis in Post-Grant Patent Opposition Proceedings

The Petitioner filed a post-grant opposition under Section 25(2)(c) of the Patents Act, 1970, against Patent No. IN 283059 granted to Respondent No. 2.

The opposition was based on prior art ("D1"), an Indian Patent Application (1249/DEL/2010).

The Petitioner was an inventor in D1.

D1 had a priority date of May 31, 2010.

The impugned patent had a priority date of September 15, 2010.

Respondent No. 1 (Deputy Controller of Patents) dismissed the opposition via an order dated July 7, 2023.

The Controller concluded that D1 was not an "appropriate disclosure" without providing technical reasoning or a comparative analysis of the claims.

The Petitioner challenged this order as being unreasoned and reflecting non-application of mind.

1. Whether the Impugned Order passed by the Deputy Controller of Patents was a "speaking order" containing sufficient technical and legal reasoning as required by law.

2. Whether a provisional specification can serve as a basis for establishing a priority date for a prior claim under Section 25(2)(c) of the Patents Act.

3. Whether the Appellate Court should remand a matter to the Controller when the original order is entirely bereft of reasons.

The court applied Section 25(2)(c) of the Patents Act, 1970, which allows for post-grant opposition if the invention was claimed in a relevant Indian patent application with an earlier priority date.

It relied on Section 11(2)(a), establishing that the priority date of a claim in a complete specification relates back to the date of the provisional specification if the claim is fairly based on it.

Regarding administrative law, the court applied the principles from *M/s. Woolcombers of India Ltd.*, *S.N. Mukherjee v. Union of India*, and *Assistant Commissioner v. Shukla & Brothers*, which mandate that quasi-judicial authorities must record cogent reasons to satisfy the principles of natural justice and enable appellate review.

The court found that the Petitioner had satisfied the legal requirements of Section 25(2)(c) because D1’s priority date (May 31, 2010) clearly preceded the impugned patent's date (September 15, 2010).

However, the Controller failed to perform the necessary technical requirement: a comparative assessment of the claims in the impugned patent versus those in D1.

The court rejected the Respondents' argument that reasons were unnecessary due to "obvious differences" in the claims, noting that a finding of "inappropriate disclosure" without any explanation constitutes a total absence of reasoning rather than mere inadequacy.

The court distinguished *Zarif Ahmad* and *Maya Devi*, holding that the High Court should not abdicate its appellate function by performing a first-instance technical analysis that the statutory authority failed to do.

It held that an order lacking any technical analysis or reasons is unsustainable.

The matter was remanded to the Patent Office for fresh adjudication by a different Controller who must provide a reasoned decision in accordance with the law.

No order as to costs was made.