German sportswear label, Adidas, has launched legal action against Australian fashion label White Fox Boutique, accusing the fast-growing retailer of selling and advertising clothing featuring a four-stripe design that allegedly infringes its iconic three-stripe trademark.

The case, which opened in the Federal Court of Australia on Friday, pits one of the world’s most recognisable sportswear brands against a popular youth fashion label whose founders are now facing a high-stakes battle over branding, consumer perception and the limits of design imitation.

The German sportswear giant alleges that White Fox has been selling and promoting garments featuring four parallel stripes of equal width since at least March, despite repeated warnings to stop. According to Adidas, the designs are “substantially identical with or otherwise deceptively similar” to its trademarked branding, which has enjoyed legal protection in Australia since 1957. The company claims that the resemblance risks misleading consumers into believing the two businesses are commercially connected or that Adidas has endorsed White Fox’s products.

White Fox Boutique, founded in 2013 by Sydney-born entrepreneurs Daniel and Georgia Contos, has denied breaching trademark law. Although the company has yet to lodge a formal defence, its lawyers told Justice Ian Jackman that it intends to argue that similar decorative stripes appear on clothing sold by other major Australian retailers, including Cotton On, Sportscraft and Glassons.

That argument could prove central to the dispute, raising questions about how far a company can protect a familiar visual identity when stripes and other basic design elements are widely used across the fashion industry.

At the heart of Adidas’s case is the commercial power of its three-stripe design, which the company describes as having a “substantial and valuable reputation” in the Australian market. For decades, the stripes have become synonymous with the Adidas name, appearing on everything from trainers and tracksuits to everyday leisurewear.

The company argues that White Fox’s four-stripe designs come sufficiently close to its established identity to create an association in consumers’ minds, even though the number of stripes differs.

Adidas’s lawyers have accused White Fox of intending to trade on that reputation through its advertising and product sales. The company alleges that the Australian retailer has not merely adopted a decorative feature but has used a design capable of evoking the familiarity and commercial appeal of Adidas branding. In its court documents, Adidas argues that White Fox is either deliberately encouraging an association between the two brands or, at the very least, “sailing close to the wind”.

The dispute extends beyond the appearance of the clothing itself to the way White Fox has marketed its products online. Adidas alleges that the retailer used models wearing genuine Adidas products in advertisements promoting White Fox garments featuring four stripes and branded socks. One example highlighted in the proceedings concerns an online advertisement published in June 2025, in which a model wearing pink Adidas shoes appeared in a promotion for White Fox socks.

The sportswear company further alleges that White Fox altered the image after legal proceedings began last month. According to Adidas, the retailer initially removed one stripe from the Adidas logo on the shoes before digitally erasing all three stripes approximately a week later.

The allegation introduces another contentious dimension to the case, because the court may need to consider not only the similarities between the competing designs but also whether the advertising could give consumers a misleading impression of an association or endorsement.

Adidas has submitted side-by-side comparisons of the two companies’ products, including sweatpants, socks and lounge shorts, as evidence of the alleged similarities. Such comparisons are likely to form an important part of the legal argument, although the ultimate question will be whether the relevant designs and their presentation amount to trademark infringement under Australian law. Similarities alone do not automatically establish a breach; the court must assess the applicable legal tests and the evidence presented by both sides.

The potential financial consequences could also be significant. Adidas is seeking damages and wants White Fox to account for profits allegedly generated by the disputed products, together with interest and legal costs. If the court finds in Adidas’s favour, the case could have implications for the retailer’s product range, advertising practices and future approach to branding. However, the proceedings remain contested, and no final finding of infringement has been established.

The case also highlights a broader tension in the fashion business, where brands regularly compete through familiar silhouettes, patterns, logos and decorative details. For major companies, distinctive visual branding represents years of investment in marketing and consumer recognition.

For smaller and emerging labels, the challenge is to create commercially attractive products without crossing legal boundaries around another company’s protected identity. White Fox’s planned reliance on examples from other Australian retailers suggests it will seek to challenge the suggestion that Adidas can claim exclusive control over every similar use of stripes.

Founded in 1949 by Adolf “Adi” Dassler, Adidas has grown into a global sportswear powerhouse, building its reputation through associations with leading athletes, sports teams and major sporting events.

The company reported revenue of €24.8 billion in 2025, underlining the scale of the business defending its brand. Its three-stripe identity has become one of the most familiar symbols in international sportswear, extending far beyond professional athletics into streetwear and everyday fashion, particularly among younger consumers.

White Fox, meanwhile, has built its business around fashion aimed at a younger market, establishing a strong presence through online retail and social media marketing. That commercial model makes visual presentation particularly important: product photographs, influencer-led promotions and carefully styled campaigns can play a major role in shaping consumer demand. It also means that the way a product appears in an advertisement may become just as important as the garment itself when questions of brand association arise.

The court battle is about more than the difference between three stripes and four. It concerns whether the overall appearance and promotion of White Fox’s products could lead consumers to associate them with Adidas, and where the law draws the line between legitimate design choices and the unauthorised use of another company’s commercial reputation.

For Adidas, the case is an attempt to defend one of its most valuable brand assets against what it considers an unacceptable imitation. For White Fox, the proceedings present an opportunity to challenge that interpretation and argue that striped designs are not the exclusive preserve of a single sportswear company. With the retailer yet to file its formal defence, the full strength of its argument remains to be tested.

The outcome could offer an important reminder to fashion businesses that seemingly small design decisions can carry substantial legal and commercial consequences. Until the court reaches its decision, however, the allegations remain allegations, and the question of whether White Fox crossed the line into trademark infringement is one for the court to determine.