OEM vs ODM in Electronics: Who Owns the Design

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In sourcing, OEM means a factory builds your design under your brand. In many US guides, the OEM is the brand owner. With an ODM, you put your brand on the factory's design, and the ODM often keeps the design, firmware and FCC grant. An EMS builds to your files. Choose by who must own the files and grant.

OEM, ODM, EMS and JDM describe who designs a product and who builds it. For a hardware startup, three questions matter more than the label: who owns the design files, whose name is on the FCC grant, and what you can change without the manufacturer. This guide answers them for each model.

This is an engineering and sourcing summary, not legal advice. Rule text is from the eCFR, current to November 4, 2026. Have a lawyer read your contract.

What is the difference between OEM vs ODM in electronics?

The word OEM is used in two ways. In many US guides, the OEM is the company that owns the design and sells the product under its own brand. In much of the sourcing world, an OEM order means a factory builds to the buyer's design. Both uses agree on the core idea: the design comes from the brand side.

With an ODM (original design manufacturer), the design comes from the factory side. The ODM already has a product or platform. You pick a model, change the logo, colors, packaging and some features, and sell it as yours. Other buyers may sell close copies of the same base design.

The FCC rules use the term too. For equipment under the Supplier's Declaration of Conformity, 47 CFR 2.909(b)(3) lets retailers or original equipment manufacturers agree with the responsible party to take over compliance duties and become the new responsible party (as of November 2026).

These are usual patterns. A contract can change any of them.

EMS vs ODM: where do a contract manufacturer and a JDM fit?

A contract manufacturer builds a product to the customer's design. EMS (electronics manufacturing services) is the electronics version: PCB assembly, box build, programming and test. The EMS does not own the product design. It does create things of its own along the way, such as test fixtures, assembly programs and process documents, and the contract should say who owns those.

The difference with an ODM is where the design starts. An EMS needs a finished package: schematics, layout, BOM, firmware image, assembly drawings and a test plan. An ODM supplies all of that from its catalog, which is why it tempts a startup with no hardware team. Our guide to electronic manufacturing services (EMS) covers NPI, IPC class and how to choose one.

JDM (joint design manufacturing) sits in between: you and the manufacturer split the engineering, for example your firmware and their electronics. Write the split down file by file, or both sides will claim the same work later.

Another path is a design partner that assigns the IP to you, followed by an EMS for production. That keeps the files with you and still gives you engineering help. For how the three common routes compare on a pilot run, see Shenzhen ODM vs US design firm for a pilot.

Who owns the design, tooling and source files in each model?

The contract sets ownership, whatever the deal is called. Paying for work does not by itself move copyright to you. A commissioned work is a work made for hire only in nine listed categories, with a written agreement signed by both sides that says so (Circular 30, revised 08/2024, as of November 2026). Firmware, schematics and enclosure CAD are not named in that list. Any other transfer of copyright needs a signed writing under 17 U.S.C. 204(a), and the files still have to be delivered.

Our article on who owns the schematics, PCB files and firmware covers the contract terms and the full file list. Here is a shorter checklist by asset.

Who holds the FCC grant when an ODM designed the device?

For a radio device, the grant of certification can matter as much as the design files. These rules are from 47 CFR Part 2, as of November 2026. For how certification works in general, see what FCC certification is.

The FCC ID belongs to the grantee

An FCC ID is the grantee code the FCC assigns plus a product code the grantee picks (47 CFR 2.926). The same section says the FCC ID is uniquely assigned to the grantee and may not be placed on equipment without the grantee's authorization. If the ODM filed the application, the ID on your box is the ODM's.

A grant does not move with a purchase order

Under 47 CFR 2.929, an equipment authorization may not be assigned, exchanged or transferred to a second party except as that section provides. The grantee may authorize a second party to manufacture the equipment. That equipment must carry the FCC ID from the grant, and the grantee stays responsible to the FCC for it.

Your own FCC ID on the same hardware

Under 47 CFR 2.933, a new application is required whenever the FCC ID changes, even with no design change. When nothing in the design, circuitry or construction changed, the application does not need new test data unless the FCC asks for it. It needs a statement giving the original ID, the original grant date, how the relabeled unit differs, whether the original test results still apply, and exterior photos. A trade name or model number change made under 2.924 is not a change in identification.

Who is responsible after a modification

47 CFR 2.909(a) makes the grantee responsible for compliance. If anyone else modifies the radio equipment without working under the grantee's authorization per 2.929(b), the party making the change becomes responsible. Without a new authorization, 2.909(d) then requires a label naming who modified the product.

Settle whose grant you will ship under before the design is frozen. To see how certification and file ownership differ between Duobay, a direct ODM and a US design firm, read how Duobay compares with an ODM and a US design firm.

What can you change later under each model?

How much you can change after launch depends on who holds the files and the grant. Under 47 CFR 2.1043(b)(4), Class I and Class II permissive changes may only be made by the holder of the grant, except as the rule specifies (as of November 2026). Under an ODM's grant, you wait for the ODM to make them.

Our guide to engineering change orders walks through each change class, the software-change rule and how to run the change.

Changes outside the radio rules depend on files and control. With an ODM, the ODM usually decides what replaces a part that goes end of life. With an EMS working from your BOM, a substitution should need your approval. In both cases a written change process protects you.

How do you choose between ODM vs OEM, and what should you ask?

Start from what must stay yours in three years. If that is only the brand and the app, an ODM can be the fastest route. If the device itself is what you are raising money on, you need the design files, the firmware source and a grant you control.

A decision table

Some teams test demand on an ODM platform, then fund their own design for version two. That works if the first contract does not lock them into the ODM's app, cloud or grant.

What to ask your hardware team or manufacturer

• Which parts of the design are yours today, and which stay with the manufacturer? Ask for the list in writing.
• Will we receive native schematic, layout, firmware and CAD files, and at which payment?
• Does the contract assign the copyright to us in writing, beyond a work made for hire clause?
• Whose grantee code is in the FCC ID? Can we ship under our own trade name, and who files if we want our own FCC ID?
• Who files a Class II permissive change if we change the antenna or the RF layout?
• Who owns each mold, where is it stored, and what does it take to move it?
• How are part substitutions approved after the first build? Who signs the change order?

If you want a custom device with the design files and firmware source in your hands, tell us about your device.

Sources. All pages accessed November 6, 2026. Rules are amended, so confirm the current text before you decide.

• 47 CFR 2.909, Responsible party (eCFR)
• 47 CFR 2.924, Marketing of electrically identical equipment having multiple trade names and models or type numbers under the same FCC Identifier (eCFR)
• 47 CFR 2.926, FCC identifier (eCFR)
• 47 CFR 2.929, Changes in name, address, ownership or control of grantee (eCFR)
• 47 CFR 2.933, Change in identification of equipment (eCFR)
• 47 CFR 2.1043, Changes in certificated equipment (eCFR)
• US Copyright Office, Circular 30, Works Made for Hire (revised 08/2024) (copyright.gov)
• 17 U.S.C. 204, Execution of transfers of copyright ownership (copyright.gov)