Court rules no just cause to use the name “Coronil”

Managing IP is part of Legal Benchmarking Limited, 1-2 Paris Gardens, London, SE1 8ND

Copyright © Legal Benchmarking Limited and its affiliated companies 2026

Accessibility | Terms of Use | Privacy Policy | Modern Slavery Statement

Court rules no just cause to use the name “Coronil”

Sponsored by

rna-400px.jpg
Concept of a covid-19 coronavirus cure. 3d rendering of a pill on a hi tech red background with chemical formula.

Coronil, an ayurvedic drug (formulation of herbs and minerals) developed by Patanjali Ayurved that was initially promoted as a cure for the COVID-19 virus and later approved to be sold as an immunity booster to fight Coronavirus, has run into a controversy. A Chennai-based company Arudra Engineering (Arudra) filed a suit before the Madras High Court, alleging trademark infringement. Arudra sought an injunction restraining Patanjali Ayurved (Patanjali) and Divya Yog Mandir Trust, subsequently impleaded as a defendant, from using the mark "Coronil" or any deceptive variation.

At the admission stage, the High Court based on Arudra's registration of an identical mark "Coronil" granted an ex-parte injunction restraining Patanjali from using the mark "Coronil". Aggrieved by the injunction order, the defendants applied to set aside the same. This insight discusses the contentions raised by the parties, and the order passed by the judge on the injunction application.

The issue before the court was whether infringement provisions provided under Section 29(4) of the Trade Marks Act are satisfied in this case. In other words, whether the following conditions are satisfied:

i) that the plaintiff's trademark is registered;

ii) that the defendants' mark (unregistered) is similar to the plaintiff's registered trademark;

iii) that the defendants operate/seek to use their mark in a different business altogether;

iv) that the plaintiff's registered trademark has a reputation in India;

v) that usage of the said unregistered trademark by the defendants is without due cause; and

vi) that such usage of the mark without due cause takes unfair advantage of or is detrimental to either the distinctive character or the repute of the plaintiff's mark

The trademark has a reputation in India (not the same as well-known mark)

The controversy in this case concerned the meaning of the expression "registered trademark has a reputation in India". Should it be interpreted as meaning a well-known mark in a situation in which the marks are being used for different goods? The plaintiff's mark "Coronil" was in use for chemicals (falling in Class 1), whereas the defendants used the mark for medicinal products (falling in Class 5). The defendants argued that the class of customers and trade channels are different. The court relying on judicial precedent observed that any need to resort to interpretation arises only when there is ambiguity and not when the words are plain and clear and directly convey the meaning. Further, to maintain the sanctity of judicial discipline, the court cannot impute words not in the provision or in the statute and, thus, discarded the said argument. The court on the basis of the client list of the plaintiff and its sales of chemicals under the brand "Coronil" came to the conclusion that they had established their reputation.

Use of a mark without "due cause"

The defendants initially stated that their product 'Coronil' was a treatment for Coronavirus and later backtracked saying that it was an immunity booster for coughs and colds. This as per the plaintiff was an infringement of their registered trademark "without due cause'. Further, such use caused substantial damage to the reputation of the plaintiff's mark with respect to its quality. The plaintiff argued that the marketing of the "Corona Tablet", initially as a treatment for Coronavirus and later stating that it was an immunity booster for coughs and colds, would lead a common man to question whether the Coronil chemical agent marketed by the plaintiff was also inferior in quality to what it had been marketed as, namely as an agent to remove corrosion or prevent corrosion.

The court took the view that as the defendants' product does not cure Coronavirus, the following applies:

"The defendants could have used any name to signify their product as an immunity booster and market the same to the general public rather than play upon the fear and panic among the public by introducing a product ostensibly to cure Coronavirus, when as a fact, it does not and later stating it is an immunity booster. The stand of the defendants does not augur well with their statement that they have a due cause. They do not have a due cause. It must be kept in mind, that there is no cure for Coronavirus anywhere in the world as on date. People are dying. In these tragic times, the defendants seek to make money, money, money. They seek to exploit the fear among the people by projecting that they could cure Coronavirus. There is no cause much less due cause, and much less just cause to permit the defendants [to use] the word 'Coronil'."

Importance of due diligence

The big lesson for brand owners comes from the court's observation, as follows:

"The defendants have invited this litigation on themselves. A simple check with the Trade Marks Registry would have revealed that 'Coronil' is a registered trademark. If they had, and had still, with audacity used the name 'Coronil', then they deserve no consideration at all. They cannot assume they can bulldoze their way and infringe a registered trademark. They must realise there is no equity in trade and commerce. If they had not done a check with the Registry, then they are at fault. They cannot plead ignorance and innocence and seek indulgence from this Court. Either way, indulgence is refused."

The brand selection went wrong, resulting in a restraint order, monetary loss, and bad PR for yoga guru Baba Ramdev's companies, Patanjali Ayurved and Divya Yog Mandir Trust, as result of the adoption of a misleading mark.

narula-ranjan.jpg

Ranjan Narula

 

konnanath-mohandas.jpg

Mohandas Konnanath

more from across site and SHARED ros bottom lb

More from across our site

After Matthew McConaughey registered trademarks to protect his voice and likeness against AI use, lawyers at Skadden explore the options available for celebrities keen to protect their image
The Via members, represented by Licks Attorneys, target the Chinese company and three local outfits, adding to Brazil’s emergence as a key SEP litigation venue
The firm, which has revealed profits of £990,837, claims it is the disruptive force in the IP-legal industry
In the first of a two-parter, lawyers at Santarelli analyse the patentability of therapeutic inventions where publication of clinical trial protocols occurs before the application's filing date
Arun Hill at Clarivate assesses the Top 100 Global Innovators 2026 list, including why AI has assumed a strategic importance for innovation
Practitioners and law firms should keep their eyes peeled for the shortlists for our annual awards
Despite a broader slowdown in US IP partner hiring in 2025, litigation demand drove aggressive lateral expansion at select firms
Winston Taylor is expected to launch in May 2026 with more than 1,400 lawyers across the US, UK, Europe, Latin America and the Middle East
News of White & Case asking its London staff to work from the office four days a week and a loss for Canva at the Delhi High Court were also among the top talking points
With boutiques offering an attractive alternative to larger firms, former Gilbert’s partner Nisha Anand says her new firm will be built on tech-smart practitioners, flexible fees, and specialised expertise
Gift this article