Can the design fee from an ODM plastic case supplier be waived?

Answer: Rarely. The usual move is to offset it against tooling or the first 500 pieces.

Who should apply for the design patent?

Answer: Depends on who pays and who designs. A supplier-designed case is filed by the supplier; ownership needs an agreed applicant change.

How long should an exclusivity period run?

Answer: 24 months is common, but it must carry an annual minimum; exclusivity without volume is a free lock-up.

Who owns the tool in an ODM project?

Answer: Supplier-funded and amortised means the supplier owns it, and a transfer needs a new tool. Buyer-funded means buyer-owned.

Can prototyping be skipped to save time?

Answer: Not advisable. Five days and a few thousand CNY of printing expose latch misalignment and foam interference.

How do I judge whether an ODM plastic case supplier can really propose?

Answer: Three signs: three independent directions in round one, proposals with prototype and stacking data, and a list of existing patents.

ODM Plastic Case Supplier Quotations: Three Lines, Four Numbers

Quick answer: With an ODM plastic case supplier the design sits on the supplier's side, so the quote carries three extra layers: proposals, patents, exclusivity. Fix three lines (design, patent, exclusivity exit) and four numbers (MOQ, design fee, deposit, payment term) before signing.

Quotation Structure from an ODM Plastic Case Supplier
Appearance Proposals: Three Rounds to Tool-Ready
Structural Proposals and Prototype Validation
Patent Ownership: Applicant and Inventor
Exclusivity Terms and Tool Ownership
MOQ, Lead Time and Payment Terms
FAQ

1. Quotation Structure from an ODM Plastic Case Supplier

The real difference from build-to-print work: design moves off the buyer's cost sheet onto the supplier's revenue sheet.

A serious ODM plastic case supplier splits the quote into five lines: design separate from tooling, prototypes per piece, deposit on its own account. One unit price buries all three.

Line	Basis	Offsettable	Ownership record
Design fee	One-off, per round	Tooling offset	Copyright to buyer
Prototypes	Per piece, 1:1 print	No	Prototype to buyer
Tooling	Per set, by cavities	No	Ownership clause required
Moulding	Per piece, machine hour	Not applicable	Runner scrap
Deposit	One-off, refundable	Against invoices	Refund trigger

Four numbers: 500 pieces per batch, a 36,000 CNY design fee, a 200,000 CNY exclusivity deposit, 45-day terms.

2. Appearance Proposals: Three Rounds to Tool-Ready

Three appearance directions beat ten.

ODM plastic case supplier: white case open on a timber bench, black foam cut into pockets, white parts trays and small plastic fittings beside it, shelving behind

Round one is directional: three options each for body, handle and latch position, compared as renderings, seven working days per round. Round two converges on one direction and refines radii and the parting line, where draft angle matters: under 1 degree, parts scuff. Round three produces the CMF board, with colour, texture and print position signed off.

Once the appearance is frozen, another change at an ODM plastic case supplier costs more than a design fee. The cavity is rough-machined, so a new parting line scraps an insert; the quote says tool modification, the plant reschedules.

3. Structural Proposals and Prototype Validation

Structural proposals come in two versions; from the third, the supplier bills by the hour.

Load-bearing walls 4.0 mm, other walls 2.8 mm, transition no steeper than 3 to 1
Ribs at 60 mm pitch, 0.6 times wall thickness, to avoid sink marks
Latch and hinge clearance 0.5 mm, cycle life verified to 20,000 openings
Stacking at 80 kg for 24 hours, permanent deformation under 2 mm
Hardware salt spray 72 hours, latch springs fatigue-tested separately
Prototype in 5 days, printed one-to-one, assembled once before sign-off

The prototype stage is not optional. A printed set surfaces latch misalignment, stress at the handle root and foam hitting the wall. Fixing them on paper costs far less than in steel.

4. Patent Ownership: Applicant and Inventor

Who is named applicant on the design patent is the line most often skipped.

ODM plastic case supplier: white case open on a worn bench, black foam pockets with tape rolls, wooden-handled tools and a meter

Where the ODM plastic case supplier creates the design, it files by default and the buyer receives a licence, not ownership. To flip it, negotiate before the design fee is settled and split applicant from inventor: buyer applies, the designer is named, moral rights stay. Allow 10 days for a search and ask for the supplier's existing patents.

One design sold to a second buyer is more common than a stolen drawing. That is an exclusivity problem, not a patent one.

5. Exclusivity Terms and Tool Ownership

With an ODM plastic case supplier, exclusivity is not a sentence but a set of exit conditions.

Term	Usual wording	Real risk
Period	24 months, auto-renewing	No threshold, cheap lock-up
Territory	Global or regional	Vague wording, no term
Volume	Annual minimum	Top-up unstated
Tool	Supplier-funded	Tool cannot travel
Deposit	Refundable at expiry	Trigger missing

Tool ownership deserves the closest reading. Most programmes have the supplier fund the tool, the buyer amortising per piece to 30,000 units. That suits cash flow, but ownership stays with the supplier, so a move means paying for a new tool. If the buyer pays in full, the contract should name owner, storage location and collection conditions. A 25-day notice period is common. Before signing, walk the floor and see where the tool actually sits.

6. MOQ, Lead Time and Payment Terms

MOQ counts per batch, and in ODM work it includes colour.

One colour starts at 500 pieces, so three colours means 1,500 pieces of first commitment. A supplier will usually accept 300 pieces if the design fee moves to 50,000 CNY or the deposit to 300,000.

Lead time runs from appearance sign-off: 12 days of structural design, 5 prototyping, 26 tooling, 3 T1 trials, 14 production, 60 days total. Payment runs 30 percent deposit, 50 percent before shipment and 20 percent within 45 days of acceptance; the extra 15 days is the buffer for appearance approval.

Conclusion

ODM sourcing buys design and manufacturing in one package, settled separately. Three lines fix ownership: design, patent, exclusivity exit. Four numbers fix the commitment: 500 pieces, a 36,000 CNY design fee, a 200,000 CNY deposit, 45-day terms. Put all seven into the contract and quotations from an ODM plastic case supplier become comparable.

This article discusses only the container (case body) side of specifications and design intent, and does not cover any handling, loading or use of the contents.