Green Trademarks: Why ECO, GREEN and POWER Won't Set Your Mark Apart

The ESG era has a branding reflex: make the mark sound greener. ECO, GREEN, BIO, NATURE, POWER — bolt one on and signal responsibility. In trademark law, the reflex backfires. In France and the EU, adding a “green” term to an existing sign rarely creates enough distance to escape a likelihood of confusion, because these words are treated as weakly distinctive exactly where companies most want to use them. Opposition decisions from the French PTO (INPI) and the EUIPO point one way: in the large majority of the decisions reviewed for this article, the office found confusion despite the added green term.

Distinctiveness is judged against the goods

The reason sits at the base of trademark law, and it is the same on both sides of the Atlantic: a sign’s distinctive character is assessed in relation to the goods and services it covers. APPLE is highly distinctive for computers and descriptive for cider, and a US examiner would say the same. So ECO, GREEN, BIO and NATURE are weak precisely in the sectors that reach for them — energy, food, cosmetics, cleaning products — where they describe a quality of the product rather than its source.

Good to know

A word can be distinctive in one field and descriptive in another. POWER might be distinctive for legal services; it is weak for sports equipment or energy drinks, where it touts the product’s performance.

The INPI’s examination guidelines put laudatory terms — words vaunting a product’s qualities or merits — outside distinctiveness in principle. ECO vaunts ecological or economical qualities, GREEN environmental credentials, POWER performance, BIO organic origin, NATURE naturalness. See the pillar on absolute grounds of refusal.

Why the green word doesn’t differentiate

When a junior mark reproduces an earlier mark and adds a weak term, the office treats the reproduced part as the dominant element and discounts the addition. A consumer of average attention seeing ECOSPHERE registers SPHERE first; the ECO- prefix reads as an environmental positioning cue, not a new brand.

That is exactly how SPHERE / ECOSPHERE came out (INPI, 19 October 2021, OP 21-1714): ECO- was “banal and descriptive, evoking ecology,” and SPHERE remained dominant in both signs. The same logic runs through LATITUDE / LATITUDE ECO (INPI, 27 May 2008), where ECO merely evoked “ecological” or “economical” qualities of the goods.

Tellingly, the INPI uses the word “greenwashing” itself. In JUNGLE LAB / VERTIGE GREEN FACTORY (INPI, 13 August 2019, OPP 19-624), it held that “the common French use of expressions such as ‘greenwashing’ or ‘green tech’ confirms the lack of distinctive character of GREEN FACTORY.” The office is fully aware of the marketing move and prices it into the likelihood-of-confusion analysis.

The pattern across terms

The same result recurs whatever the green term:

• GREEN. In PRIMA / PRIMAGREEN (INPI, 28 May 2015, OP 15-0506), PRIMA was dominant and GREEN “understood by the French consumer as meaning green, simply qualifying PRIMA to designate environmentally friendly products.” In YELLO / GREENYELLOW (INPI, 8 February 2018) the YELLOW/YELLO element stayed dominant despite the GREEN prefix.
• POWER. In RAINBOW / RAINBOW POWER (INPI, 17 July 2024) POWER read as a promotional cue, RAINBOW as the distinctive element. Same in ANIMAL / ANIMAL POWER (INPI, 4 January 2019).
• NATURE. In L’EPICURIEN / EPICURIEN PAR NATURE (INPI, 10 January 2020, OP 19-3951), “PAR NATURE” was weak, EPICURIEN dominant. At the EUIPO, ALBA BOTANICA / ALBA NATURE (4 November 2024, B 3 210 637) swapped one nature-evoking term for another while the distinctive ALBA remained.

To be clear about method: these are the decisions reviewed for this article, not a published success rate. What matters is the consistency. Five green terms, many sectors, one recurring outcome — the added word rarely made the difference.

When it does work: a genuinely distinctive addition

The counter-example is instructive. In NUTRIBIO / KRISTEA NUTRIBIO (INPI, 20 June 2025, OP 24-4144) the opposition failed — and not because of the descriptive slogan the junior mark also carried (“trust nature”), but because the invented word KRISTEA sat up front and created real distance.

My advice

To distance yourself from an earlier mark, an eco- or nature-evoking add-on is not enough — you need a genuinely distinctive element. A neologism or an arbitrary term will always outperform a “green” prefix. If your project is [existing root] + ECO/GREEN/BIO, search the bare root first: if a prior mark exists on it, the opposition risk is high. See choosing a trademark and clearance searching.

For US counsel

Two practical notes. First, no European disclaimer practice will rescue the weak green portion; in an opposition the office simply discounts it. Second, filing a family of near-identical “green” variants of your own mark buys little: a registered mark is already protected against confusingly similar signs, so multiplying ECO-/GREEN- variants of a term nobody can monopolize is largely wasted spend. Where a US client’s sustainability line leans on descriptive green vocabulary, the durable protection lives in the arbitrary house mark, not the eco-modifier.

Key takeaways

• Distinctiveness is judged against the goods; ECO, GREEN, POWER, BIO and NATURE are weak where they describe the product.
• Adding a green term to an earlier mark usually does not escape likelihood of confusion — the earlier mark stays dominant.
• The INPI expressly factors “greenwashing” into its distinctiveness analysis.
• Only a genuinely distinctive addition (a neologism, an arbitrary term) creates real distance; clear the bare root before filing.

Applicable law

Art. L. 711-2 of the French Intellectual Property Code bars registration of a mark composed exclusively of elements that may serve, in trade, to designate a characteristic of the goods or service — including their kind, quality, value or geographical origin — or that have become customary in current language or trade.

Decisions cited

French decisions are searchable by number on Pappers Justice.