Manufacturing ยท 7 min read

Who Owns Your Patterns, Tech Packs, and Tooling?

For founders thinking about changing suppliers, or about to sign with one. What you actually own, how to check, and the clause that decides it.

Last updated July 27, 2026

Unless your agreement says otherwise, whoever made your patterns owns them. Under most contract law the creator holds the rights to what they create until those rights are assigned in writing, and paying an invoice is not an assignment. The same applies to graded specs, tech packs and tooling.

So the question is not who paid. It is what the paperwork says, and separately, what you physically hold. Those two come apart more often than founders expect. We have sat with brands who had a clean ownership clause and still could not produce a single pattern file when they tried to move.

Most coverage of this treats it as a legal problem and stops at "get an IP clause." Good advice, and it will not help you, because the brands that get stuck are rarely missing a clause. They are missing the files.

Who owns the patterns if the factory made them?

The factory, usually. And that is not a scandal.

If a factory took your sketches and built the pattern in-house, their pattern maker did that work. Absent an assignment, the output belongs to them. Many factories treat their pattern library as core IP, because it is. A pattern encodes their machines and the habits of the people running them.

Most factories would rather build the pattern themselves even when you arrive with one, because they trust their own pattern maker over someone they have never met. So the ordinary, unremarkable way of working produces an outcome where the factory holds the pattern. Nobody has to act in bad faith for you to end up locked in.

The problem is not that this is unfair. It is that most brands never find out it is the arrangement. You develop three seasons, the fit gets dialled in, the patterns get better every round, and all of that value accumulates on someone else's server. It looks like a partnership right up until you want to quote the same style somewhere else.

This came up unprompted on more than five of our sales calls in the past year. It is not a rare edge case. It is the single most common piece of lock-in we see, and almost nobody sells against it.

What about a tech pack you paid a studio to build?

Better odds, and still worth reading the contract.

Commissioned work sits differently from factory-developed work. If you hired a design studio or a freelance technical designer and the agreement calls the engagement work-for-hire, or explicitly assigns the output to you, the tech pack is yours. Plenty of good studios do this as standard.

But a tech pack is not a pattern. A pack describes the garment: sketches, graded measurements, bill of materials, construction. A pattern is the set of pieces a factory actually cuts. You can own your tech pack outright and still be unable to produce anything, because the pattern was never in scope.

We have taken on brands arriving with genuinely clean packs from reputable studios, everything correct, and still had to build the patterns from scratch before anything could be cut. The pack was theirs. The patterns did not exist in any form they could hand over.

Who owns tooling, molds, and trim development?

The murkiest of the three, and the one most contracts skip entirely.

Tooling in apparel and bags covers more than people assume:

  • Injection molds for custom buckles, clips and hardware
  • Dies for cutting, stamping and eyelets
  • Custom trim and hardware development held at a supplier
  • Embroidery tape files and screen separations
  • Custom fabric or knit development sitting with a mill

You may have paid for the mold outright and still not hold it. Physical tooling lives at the supplier who runs it, and possession does most of the work here. A supplier who is owed money, or who simply does not want to lose the account, has your production sitting in a drawer in their factory.

Worth noting: tooling is also where a supplier can be reasonable and you can still be stuck. The mold is yours, they will happily release it, and it was cut to run on their specific machine.

How do you find out what you actually own?

Four questions, and you can answer all of them this week.

  1. Ask for the DXF files. Patterns are exchanged as DXF, usually AAMA or ASTM flavoured. This is the single most useful question on this list, because it separates a yes on paper from a yes in practice. If the answer is delay, or a request to explain why you want them, you have learned something.
  2. Check who is named as the creator in your agreement, then check whether there is an assignment or work-for-hire clause. Ownership language usually sits in a short IP section that most founders skim.
  3. Ask where the files are stored right now. If the only copy lives on a supplier's system, your contractual rights are a claim, not an asset.
  4. Ask what happens on termination. Specifically whether files are returned or destroyed, in what format, and how long it takes.

If you do only one of these, do the first. Requesting the actual files is the test that cannot be answered with reassurance.

What to ask for before you sign

Five clauses. None of these are unusual, and a supplier who resists all five is telling you something useful.

  1. Assignment of all developed IP, naming patterns, graded specs, tech packs, and tooling explicitly. Listing the artifacts matters. "Designs" alone gets argued about later.
  2. Work-for-hire framing for development services, so rights vest with you as the work is produced rather than transferring at the end.
  3. Delivery in an open, usable format, and say DXF for patterns. Ownership of a file you cannot open is a technicality.
  4. A return-or-destroy obligation on termination, with a stated window. Thirty days is normal.
  5. The right to request current files at any time, not only on exit. This is the one that keeps the arrangement honest while the relationship is good.

Ask for these before you sign, when you have leverage. Asking afterwards is a negotiation you have already lost.

What happens when you try to leave

This is the part nobody warns you about, because it only shows up at the exit.

Leaving costs time before it costs money. If the patterns are not yours, or not in your hands, a new factory cannot quote from what you have. They can read your tech pack, and then they have to build patterns from scratch. New samples, new fit rounds, on a timeline nobody budgeted for.

It costs money too. Rebuilding a full set of blocks rather than carrying owned ones forward runs into five figures for a small range. And the risk does not end at the rebuild: one brand's overseas order came back roughly a size and a half off spec and was a total loss, on a program where they held no patterns and had no technical control of their own.

The version of this that stings most is the one where nothing went wrong. The supplier is decent, the relationship ended fine, and you still start the next chapter at zero because the accumulated fit work stayed behind.

How we handle ownership

Everything we make for a brand belongs to that brand. Patterns, graded specs, tech packs, tooling. Unconditionally, and it leaves with them if they leave.

The structural reason we can say that is that our pattern maker sits on our team, not at the factory. The pattern is developed on our side of the line, so handing it over is not a negotiation with a third party. That is also why fit corrections happen with us rather than being relayed to a factory and back.

Files live in the brand's own Google Drive, not only ours, and we are contractually obligated to send the DXFs whenever they are asked for. Most brands never ask, because they have no way to open them. We tell them to keep them anyway.

We took this position because the alternative is common enough to be a category norm. Gatekeeping files. Refusing to name the factory or the mills. It works as retention until the client notices. Then it is the reason they leave.

If you want to see how development, sourcing and production sit together under one roof, our system covers it. If you are earlier than that and working out what your range costs to scope, what is a tech pack explains what has to exist before a factory can quote you at all.