Most of us look forward to the Google Doodle, which is the point — a constantly changing logo that keeps people watching. It also raises a question trademark law answers uncomfortably: what protects a mark that is never quite the same twice?
What they are
Fluid trademarks are variations of a mark — usually a registered one — that coexist with the underlying mark, created to build consumer interest and strengthen brand loyalty.
Why brands use them
Traditional trademark principles treat a mark as conventional and static: unchanging words or logos with which consumers develop familiarity over time. In a competitive environment, being distinctive matters, and a fresh, eye-catching treatment of the mark can make a stronger impression than the same logo indefinitely.
The trend is to use fluid trademarks as a business strategy — to lift the brand and stay relevant.
The risks
Non-use of the underlying mark. Non-use costs you rights despite registration — roughly three years in the US, five years in Europe, and in India five years and three months after registration under Section 47. Unlike domain names, you cannot hold a registration purely defensively; you must actually use it.
So the essential and underlying features of the mark must be retained, and the original mark must not be allowed to lie dormant. A brand whose public-facing identity is entirely variants risks a registration covering something it no longer uses.
Consumer doubt. Some brands get carried away, producing variations that leave loyal customers questioning whether the product is genuine or a knock-off. I had exactly that reaction to a Frooti can recently — telling a colleague “that’s not the original”, then checking the manufacturer and finding it was. Do not deviate so far that consumers doubt authenticity.
Imitations and parodies. Variation invites both, and that is probably unavoidable.
Can you enforce a variant?
What if someone uses the same variant of your mark?
Unless you hold a registration for the variant itself, an infringement suit may not be available — registration protects the mark as registered. In a common law country such as India, though, the owner can bring an action for passing off, which protects goodwill rather than the registration.
This is the same structural point that decided the Adidas three-stripe case in the EU: a registration covers the specific mark registered, and use in other forms may not count as use of that mark. Fluid brands should therefore register the core elements that persist across variants, and keep the underlying mark in genuine use.
Copyright as a supplement
Fluid marks can also be protected under copyright law as artistic works. That helps against third-party imitations and parodies, and against competitors using the variations for comparison — and it arises automatically on creation, without registration.
Using them well
- Retain the essential characteristics of the original mark.
- Scale matters. It makes sense for a name like Google to experiment. A less established brand should build recognition in its current mark first, rather than experimenting at the outset.
- Word mark variations are riskier than device variations, and may confuse — unless, like Perrier’s play on its own name, they keep the same font and treatment so the parent mark stays visible.
- Keep the underlying registered mark in use, and consider registering the persistent elements.
For all that, it is a genuinely good way to stay connected with consumers who look forward to the next variation — as I am, mentally listing the occasions coming up this year worth checking the Doodle for.
The takeaways
- Fluid marks coexist with the registered mark to build engagement.
- The underlying mark must stay in use — five years and three months of non-use is fatal in India.
- Variants may not be enforceable as infringement; passing off is the fallback.
- Copyright protects the artwork automatically, supplementing trademark rights.
Frequently asked questions
What is a fluid trademark? A variation of a mark that coexists with the underlying registered mark, used to build consumer interest — Google Doodles being the best-known example.
Can I sue someone for copying a variant of my logo? Only for infringement if the variant is itself registered. Otherwise, a passing off action is available in common law jurisdictions such as India.
Does using variants put my registration at risk? It can — if the registered mark itself falls out of use, it becomes vulnerable to removal for non-use after five years and three months in India.
Are fluid marks protected by copyright? The artwork can be, as an artistic work, which helps against imitations and parodies independently of trademark rights.
Legislation referred to
- The Trade Marks Act, 1999
- The Copyright Act, 1957