Practical Answer — Product Development / Manufacturing Rights

Product Development Agreement Before Manufacturing in China: What Should It Cover?

By Peter Lin, Founder, China IP Gateway · July 2026

This page is informational guidance, not formal legal advice.

In short

The key issue is not only confidentiality. When working with a Chinese developer, prototype shop, or manufacturer-developer before production, the buyer must control the development outputs — CAD files, drawings, prototypes, molds, and improvements — and the right to manufacture the product later, including whether the developer or factory can use the design, tooling, or improvements for other buyers.

When a product development agreement matters

A product development agreement is relevant when a Chinese entity is involved in creating, improving, or refining your product before production begins. This includes:

Industrial design firms creating product sketches, renders, or 3D models

Prototype shops developing early physical models

Engineering firms turning concepts into manufacturable specifications

Factories offering development services before committing to production

Manufacturer-developers who both design and manufacture the product

ODM partners adapting an existing product design for your brand

Who is developing the product — and what role do they want?

The developer's identity and intentions affect the terms you need. Three common scenarios create different risks:

Pure development firm (no manufacturing)

Owns the design output unless explicitly assigned to you; may license designs to others

Factory offering development before manufacturing

Controls both the design and the production; difficult to separate if relationship ends

ODM partner with existing product platform

Their base design is shared across multiple buyers; what is custom to you must be clearly defined

What deliverables should be defined

The development agreement should specify exactly what outputs the developer will create and must deliver:

CAD / STP / STEP / 3D model files

2D engineering drawings and dimensions

Physical prototype(s) — how many, which stage

BOM (bill of materials) in agreed format

Tooling, molds, or fixtures created during development

Test reports or sample approvals

All files in editable formats (not read-only or proprietary-locked)

Who owns prototypes, CAD files, molds, improvements, and manufacturing rights

Asset	Default risk (no agreement)	What the agreement should say
CAD files / drawings	Developer may claim ownership as work product	All files are assigned to the buyer on delivery
Physical prototypes	Developer retains possession; buyer has no return right	Prototype title transfers to buyer on payment
Development tooling / molds	Developer may use tooling for other buyers	Tooling owned by buyer; exclusive use only for buyer
Improvements during development	Developer may claim IP on improvements	All improvements are assigned to the buyer
Manufacturing rights	Developer may refuse to transfer design to another factory	Buyer may manufacture with any factory using the deliverables

What happens if development stops

Development relationships can end for many reasons — budget, quality issues, communication breakdown, or a change in product direction. The agreement should address what happens at termination:

All completed and in-progress files must be delivered to the buyer

All tooling, molds, and physical prototypes must be returned or transferred

Payment obligations limited to work completed and delivered

Developer may not use, sell, or license the design to others

Developer may not file IP based on the design

When the developer also wants to manufacture

If the developer proposes to both design and manufacture the product, you are entering a situation where one entity controls the design, tooling, and production. Before agreeing:

Confirm that the design files and tooling are owned by you — not the factory

Confirm that you can take the design and tooling to another factory if needed

Confirm that the manufacturing agreement is separate from the development agreement

Confirm that payment for development and payment for manufacturing are separately tracked

Consider whether the factory's control over both design and manufacturing creates a dependency risk

How this connects to NNN and manufacturing agreements

A product development agreement is part of a staged contract structure:

Stage	Document
Before any files or information shared	NNN agreement (non-disclosure, non-use, non-circumvention)
During design and prototyping	Product development agreement (deliverables, IP ownership, manufacturing rights)
Production stage	Manufacturing / OEM agreement (quality, payment, tooling, subcontracting)

What not to leave vague

"All IP belongs to the client" without specifying what is included

Ownership of "the design" without specifying CAD files, tooling, and improvements separately

"Development fee includes manufacturing rights" — manufacturing rights should be explicit, not implied

No file format or delivery specification — developer may deliver unusable or read-only files

No termination clause — leaving no agreed process for ending the development relationship and recovering files

How China IP Gateway can help

China IP Gateway can help overseas product companies review whether the development agreement adequately addresses deliverable ownership, IP assignment, manufacturing rights, tooling, and what happens if development stops. A Supplier Control Review can also assess whether the current development relationship creates structural risks for the production stage.

Outcomes depend on the facts, documents, and supplier situation. No result is guaranteed.

Frequently Asked Questions

Do I need a separate product development agreement if I already have an NNN?

Often yes. An NNN controls what the developer can do with disclosed information, but it does not necessarily assign ownership of what the developer creates, define deliverables, or address manufacturing rights. A product development agreement should address deliverable ownership, IP assignment, manufacturing exclusivity, and what happens to CAD files, molds, and prototypes if the development relationship ends.

Who owns CAD files and prototypes developed by a Chinese developer or factory?

Ownership depends on what the agreement says — not only on who paid. If no development agreement is in place, the developer may claim ownership of design files, CAD geometry, or tooling they created, even if you funded the work. Ownership should be explicitly assigned to the buyer in the development agreement or a related IP assignment document.

What if the developer also wants to be the manufacturer?

This is common in China — development shops and factories often propose to manufacture the product they help design. This creates a structural risk: the developer controls the design, the tooling, and the manufacturing process. Before agreeing to this, the development agreement should address who owns the design outputs, whether the buyer can take the design to another manufacturer, and what controls apply to the tooling and manufacturing rights.

What happens to tooling and molds if the development relationship ends?

This should be explicitly addressed before development begins. If the development shop creates tooling, the agreement should specify ownership, return or transfer conditions, and whether the developer can use the tooling for other buyers. Without these terms, the developer may claim the tooling as their own, hold it as leverage, or use it to manufacture competing products.

How does a product development agreement connect to a manufacturing agreement?

A product development agreement covers the design and prototyping stage: deliverables, ownership, IP, and manufacturing rights. A manufacturing agreement then governs the production stage: quality, payment, tooling, subcontracting, and delivery. Both may be needed if the same supplier handles both development and manufacturing — or separate agreements may be used if development and manufacturing are done by different entities.

Written by

Peter Lin

Founder & China Supplier Control Lead, China IP Gateway

Peter Lin works with overseas product companies on product development agreement structure, manufacturing rights, IP ownership terms, and supplier-control review before and during China-side development and production.

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