A sustainable fashion startup sells a promise as well as a product, and the law now tests that promise more closely than it tests the garment. Regulators in Europe and the United States fine brands for unproven environmental claims, and new supply chain rules reach any founder who imports garments. This checklist lists seven checks to complete before launch, in the order most founders need them.
1. Settle Who Owns What Among Founders
Start with the founders’ agreement. Harvard Business School research found that co-founder disputes cause as many as 65 percent of startup failures, and most trace back to an equity split nobody wrote down. The agreement should record ownership percentages and what happens when a founder leaves. Register the business and its tax accounts at the same time, since FLJ’s guide to compliance in fashion startups shows how much harder missing registrations become to fix after a brand scales.
2. Register the Brand Name Before You Print Anything
Search the USPTO database for conflicts before you commit to a name, then file in Class 25, the class for clothing. The USPTO charges $350 per class when the application uses the goods descriptions in its ID Manual and $550 when the wording is custom. Initial examination begins about six to eight months after filing, so file early. Use ™ from the first day of trading and switch to ® only after the registration certificate issues.
3. Own the Designs
Ownership of a design depends on how the designer works. Under Section 101 of the Copyright Act, work an employee prepares within the scope of employment belongs to the employer, while a freelancer keeps the copyright unless a written agreement assigns it. Get that assignment signed before the freelancer sends final files. Sign a non-disclosure agreement before a technical pack reaches a factory too, because trade secret law protects only information an owner takes reasonable efforts to keep secret.
4. Substantiate Every Sustainability Claim
This check carries the heaviest penalties for a brand built on sustainability. The EU’s EmpCo directive has applied since 27 September 2026. It bans generic claims such as “eco-friendly” without recognised excellent environmental performance, and it bans both sustainability labels that lack an independent certification scheme and carbon neutral claims that rest on offsets. In the United States, the FTC’s Green Guides, codified at 16 CFR Part 260, treat unqualified claims as difficult to substantiate.
Build an evidence file for each claim before the claim goes on a tag or a website. A certification gives the strongest support: GOTS requires at least 95 percent certified organic fibres for its “organic” label and at least 70 percent for “made with organic.” Regulators act on weak files. Italy’s competition authority fined Shein about €1 million in August 2025 and France’s regulator fined it €40 million a month earlier, both over claims tied to its sustainability campaign.
5. Label Every Garment Correctly
A startup that sells under its own name owns the labelling duties. The Textile Fiber Products Identification Act requires generic fibre names and percentages by weight, the manufacturer’s name or registered identification number and the country of origin. The FTC Care Labeling Rule adds a permanent care label. Brands that sell into Europe also need to meet that market’s fibre composition rules, which FLJ’s guide to textile laws compares with the US framework.
6. Vet Suppliers Before the First Purchase Order
Supply chain law now reaches small brands through the goods they import. The EU Forced Labour Regulation applies from 14 December 2027 and covers any product made in whole or in part with forced labour, including stock already in a warehouse. It offers no safe harbour, and authorities ask for supply chain maps, bills of materials, purchase orders and customs records. In the United States, the Uyghur Forced Labor Prevention Act creates a rebuttable presumption that goods made wholly or partly in Xinjiang cannot enter the country, and importers carry the burden of rebutting it.
California adds another duty. Its Garment Worker Protection Act makes a brand that contracts for garment manufacturing jointly liable with its manufacturer for unpaid wages, so a startup that hires a Los Angeles factory answers for that factory’s unpaid wages. Put supplier warranties and audit rights into every manufacturing agreement, and keep the documents that trace each fabric to its source.
7. Plan for Unsold Stock
The EU’s ban on destroying unsold clothing exempts micro and small enterprises, meaning companies with fewer than 50 employees and turnover of no more than €10 million. Large companies have faced the ban since 19 July 2026 and medium-sized companies follow in 2030, so a growing startup meets it on a known date. The revised Waste Framework Directive entered into force on 16 October 2025 and requires textile producers to pay for the collection and recycling of used clothing once member states set up their schemes. Track inventory and the reasons for any write-off from the first season, because those records answer both regimes.
Finish the Checklist Before the Launch Post
A startup that completes these seven checks launches with evidence behind every claim it makes and a signed chain of ownership for its designs. The checks cost far less before launch than they cost after a regulator or a co-founder asks for the paperwork.
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