SRF Limited v. Solvay S A & Anr.

Patents are meant to reward genuine innovation, but what happens when a company believes a granted patent was built on shaky ground? The dispute between SRF Limited and Solvay S A is a powerful reminder that the patent system has checks and balances, and that competitors with skin in the game have a legal right to challenge patents they believe should never have been granted. For founders and IP professionals, this case underscores a critical truth: a granted patent is not the end of the conversation, it can be the beginning of a fight.

SRF Limited, an Indian company with commercial interests in the chemical manufacturing space, set its sights on Patent No. IN331314, titled 'PROCESS FOR THE PREPARATION OF HALOGENATED CARBOXYLIC ANHYDRIDES.' This patent had been granted to Respondent No. 1, Solvay S A, a well-known European chemical company. SRF took the position that the patent ought not to have been allowed in the first place. To support this position, SRF brought forward various prior art references and prior use evidence, suggesting that the invention claimed in the patent was not novel or was otherwise not deserving of patent protection. This set the stage for a revocation petition filed under the Patents Act, 1970.

On one side, SRF Limited argued that the patent granted to Solvay S A was undeserving of protection. By presenting prior art and prior use evidence, SRF aimed to demonstrate that the process for preparing halogenated carboxylic anhydrides was either already known or in use before the patent was granted, undermining the novelty and inventive step required for a valid patent. On the other side, Solvay S A, as the patent holder, stood by the validity of its granted rights. The legal friction centered on whether the prior art and prior use evidence presented by SRF was sufficient to invalidate the patent, and whether SRF, as a party with commercial interest, had the standing to bring such a challenge at all.

The matter remains pending before the court as of the latest proceedings dated 22 January, 2024. The case highlights the legal mechanism available under Section 64 of the Patents Act, 1970, which permits a person with a commercial interest to seek revocation of a registered patent. While the final ruling has yet to be delivered, the proceedings themselves confirm that SRF's standing to file the revocation petition is rooted in its commercial interest in the relevant chemical space, and the court will ultimately determine whether the prior art and prior use evidence presented is enough to revoke the patent.

For founders, startup leaders, and IP professionals, this case carries a clear and actionable lesson: if you have a commercial interest and believe a competitor's patent was wrongly granted, you have a legal pathway to challenge it. Under Section 64 of the Patents Act, 1970, any person with a commercial interest can file a revocation petition. The key is to come prepared with robust prior art and prior use evidence. A granted patent is not invincible, and the law provides a structured mechanism to question its validity. For patent holders, this is equally instructive: ensure your patent applications are built on genuinely novel and non-obvious inventions, because competitors will scrutinize your claims.