Earbuds & Headphone Case Design Patents: How to Search
Two products, two classification instincts
An earbuds listing usually bundles two separately ornamental items: the earpiece itself, and the case that stores and charges it. Major brands — Apple, Bose, LG, Skullcandy and RHA Technologies among them — hold active design patents covering both the earpiece shape and the case shape separately, and some filings, titled simply "case with earphones," claim the combination as viewed together. That split matters for search strategy: clearing only the case, or only the earpiece, is not the same as clearing the product as sold.
Where earbuds and cases sit in classification systems
| System | Classification | What it covers |
|---|---|---|
| Locarno — the earpiece/headphone | Class 14, subclass 14-01 | "Equipment for the recording or reproduction of sounds or pictures," which explicitly lists earphones and headphones |
| Locarno — the case | Class 3 | "Covers for earphone cases" is separately indexed as a case specially designed for its contents, alongside cases for mobile telephones and similar accessory cases |
| USPTO design classes | D14 and D3 (often combined) | Granted earbud case patents have used a joint classification such as D14/440 together with D3/294, reflecting the dual nature of the product as both an accessory to communication equipment and a personal carrying case |
WIPO's official Locarno list places "Earphones" (ID 105095) and "Headphones" (ID 102419) under Class 14, subclass 14-01, alongside other sound-reproduction equipment such as cassette players and audio mixers. Separately, "Covers for earphone cases" (ID 105094) is indexed under Class 3, the same class used for cases specially designed for their contents — trunks, suitcases, handbags and phone cases among them. This split reflects a real functional distinction: the earphone reproduces sound, while its case is a carrying accessory, and the two are classified according to what each object actually does.
That two-class split carries through into granted US design patents. An "earbuds case" design patent has been recorded with a joint US classification of D14/440 together with D3/294 — one class for its role as an accessory to recording/communication equipment, the other for its role as a personal carrying case. Because either class alone captures only part of the relevant prior art, a search that checks only D14 or only D3 will systematically miss results.
How to search earbuds and their case
- Search the earpiece and the case separately. Use terms like "earbuds," "earphones," "wireless earbuds" for the earpiece, and "earbud case," "earphone case," "charging case" for the enclosure.
- Check both US design classes. Search D14 and D3 for case designs; the earpiece design itself is more consistently classified under D14.
- Search "case with earphones" as a combined term. Some manufacturers, notably Apple, file the case and earpiece together as a single claimed design.
- Use image search on distinguishing shapes. Case corner radii, lid hinge style and stem or nozzle shape on the earpiece are the features most often varied between otherwise similar filings.
- Confirm status per territory. Screen the US, EU and UK registers separately — a granted US design for a case shape does not extend to the EU or UK.
Frequently asked questions
What Locarno class covers earbuds and headphones?
Class 14, subclass 14-01, which covers equipment for the recording or reproduction of sounds or pictures and explicitly lists earphones and headphones.
Are earbud case design patents filed under D14 or D3 in the US?
Both. Granted design patents for earbud cases have used a combined classification spanning D14 and D3, reflecting the case's dual function as a communications accessory and a personal carrying case.
Do earbuds and their case need separate design searches?
Generally yes, since the earpiece shape and the case shape can each be separately protected, and some filings cover only one or the other. Some manufacturers also file a combined "case with earphones" design covering both together.
Sources
- WIPO Locarno Classification — Class 14 (List of Goods)
- WIPO Locarno Classification — Class 3 (List of Goods)
- USPTO — Classification of Design Patents