You send your CAD files to a Shanghai factory, pay for the tooling, spend a year ironing out the details — and then one morning a friend texts you a link. It's your product, on Alibaba, being sold by a company you've never heard of. For less than your FOB price. I've watched this happen to buyers more times than I can count, and in most cases they could have stopped it before they ever sent the first file.
The mistake isn't trusting the factory. The mistake is thinking a handshake and an NDA are the same thing as protection. After six years sourcing from Shanghai, I can tell you the one line that separates the buyers who keep their ideas from the ones who donate them: you protect your IP in China before you spend a dollar of tooling, not after someone lists your design. This post is the exact playbook I run — what actually works, what it costs, and the single mistake that undoes most protection plans.
Your NDA Is Probably Worthless Here
Every foreign buyer signs an NDA before working with a new factory. Good instinct. But a standard NDA covers exactly one thing: confidentiality — it says the supplier can't share your information. That's not your real risk. Your real risk is that the supplier takes your design files and quietly tools up, produces, and lists the product for themselves or for another customer. No disclosure happened. Your NDA doesn't cover it.
In cross-border sourcing there's a sharper tool called an NNN agreement — Non-Disclosure, Non-Use, and Non-Circumvention. It adds two things an NDA lacks:
- Non-Use: the supplier may not use your designs to manufacture a competing product for themselves or anyone else.
- Non-Circumvention: the supplier may not go around you to contact your customers or distributors directly.
That's the difference between "they can't leak it" and "they can't use it." One protects you from gossip. The other protects you from competition.
The Four Things an NNN Must Get Right
An NNN is a contract practice, not a magic statute. It's only enforceable in China if four conditions are met:
- Chinese-language version, controlling. English-only contracts are interpreted by the court's own translation, so your carefully chosen clause can be mangled. Ideally bilingual, with Chinese text controlling on conflict.
- Governed by Chinese law, resolved in China. China isn't a party to the Hague Judgments Convention, so a US or UK court ruling is essentially unenforceable there. Chinese arbitral awards, however, are enforceable in all 172 New York Convention member states.
- A specific liquidated-damages figure. Chinese courts will reduce penalties that exceed actual losses by more than 30%, but a concrete number — say RMB 500,000 — is far faster to be processed than "compensate all losses." Make it hurt, keep it defensible.
- Extended to subcontractors and affiliates. Most factories outsource steps to smaller workshops. If the NNN only binds the signing entity, your files walk in the front door and out the back.
Here's what this actually costs: a well-drafted NNN runs roughly $500 to $1,500. Compare that to what you're about to spend on tooling — typically tens of thousands of RMB — and skipping it is the most expensive way to save money.
Register a Design Patent Before You Send Anything
This is the step almost nobody does, and it's the cheapest one of all. China runs a first-to-file system: whoever files first gets the rights, whether or not they designed it. If your factory files a design patent on your own product before you do — and I've seen it happen — you become the infringer. You can lose your own product.
The fix costs less than a dinner:
- Filing fee (CNIPA design patent): RMB 500, roughly $70.
- Registration fee: RMB 600.
- Annual fees (first 3 years): RMB 600 per year.
- Total with agent + translation: about $450 to $2,000 from filing to certificate.
- Timeline: 4–6 months (formal examination only, no substantive review).
- Protection: 15 years from filing date.
Since May 2022 China joined the Hague Agreement, so you can file one international application through WIPO and cover China plus 90+ Hague member states at once. The rule is simple and non-negotiable: register your design patent before you send the CAD files to the factory. For $70, you stop being the easiest target in the room.
Who Owns the Mold? Decide in Writing or Pay Later
Mold disputes are the most depressing problem I see. You paid for the tooling. The factory has it in their warehouse. When the relationship sours and you want to switch suppliers, they "discover" you owe them maintenance, or the quality dispute must be "resolved" first — and your mold sits locked away for months. I worked with a buyer who paid RMB 180,000 for a mold, had ownership in the contract, and still lost three months of production time fighting to recover it.
Your tooling agreement needs five clauses, on paper, before you cut the first PO:
- Ownership: title transfers to you, supplier holds it only as custodian.
- Use restriction: the mold produces only your products — never theirs, never a third party's.
- Physical marking: your name and unique ID engraved, with a signed tooling register.
- Return obligation: release triggers, deadline, condition report, and transport spelled out.
- Liquidated damages for non-return: tied to replacement cost and delay, so holding your mold has a price.
Under Article 783 of the Chinese Civil Code, a factory can retain work product for genuinely unpaid compensation — but a vague, disputed invoice is no blank cheque to hold every mold. Clear contract language removes the leverage they'd otherwise use against you.
The Numbers Aren't as Scary as You Think
"Chinese courts side with Chinese companies." I hear that constantly, and the data says otherwise:
- Chinese courts accepted 11,066 new foreign-related IP cases in 2025, up 34.1% from the year before — foreign companies are filing, and filing more.
- Foreign plaintiffs' win rates in civil IP cases in China run 68% to 77%.
- China Customs seized 76.39 million trademark-infringing items at the border in 2024.
- Courts applied punitive damages in 460 IP cases in 2024, up 44.2% year on year.
The system works — if you've done your homework. Courts reward evidence: the NNN, the design patent, the mold contract, the signed tooling register. The buyers who lose are the ones who arrive with a verbal agreement and a screenshot.
The Rule
The Rule: never send a design file, approve a mold, or place an OEM order until three things are in place — a Chinese-law NNN with a liquidated-damages figure extended to subcontractors, a design patent filed before the CAD goes out, and mold ownership that says you own the tooling and the factory can only hold it as your custodian. Register first, contract second, tooling third. Do it in that order and the "stolen design" becomes the exception, not the cautionary tale.
The Bottom Line
Protecting your product idea in China costs somewhere between $500 and $2,000 and a couple of weeks of preparation. Losing it costs you the design, the tooling, the launch, and the margin — permanently. When a supplier knows you've filed the patent and signed the NNN, they don't just comply with your IP: they stop seeing you as an easy mark and start treating you like a serious customer worth keeping.
This is the checklist I run on every OEM project I manage in Shanghai — I set up the NNN, file the design patent, and draft the tooling agreement before a single file leaves my desk. If you're about to hand over a design and you're not sure your paperwork protects you, tell me what you're producing and what's already been shared, and I'll tell you exactly what to lock down before you spend your tooling budget.