Opposition · USPTO

Opposition 91306132

OtherUSPTO

Opposition 91306132 at USPTO between Sonova AG and Long Chen, over the mark SKYTREE, filed Mar 25, 2026. Status in the office record: other.

View SKYTREEGet this data via the API
Status
Other
Result
Other
Filed
Mar 25, 2026
Marks involved
2
Parties

Who is involved

The parties as named in the office record.

Opponent

Sonova AG

Company trademarks
Respondent

Long Chen

Timeline

How the case has moved

Dates from the USPTO record and the SKYTREE filing.

  1. SKYTREE filed

    Application 99368911 filed at the USPTO.

  2. Opposition filed

    Sonova AG started opposition 91306132 at USPTO against SKYTREE.
Marks

Marks involved

1 contested mark, 1 mark the challenger relies on.

MarkRoleApplicationOffice
SKYTREEContested99368911USPTO
PHONAK SKYRelied on86095149USPTO
API

Get this data via the API

Every fact on this page comes from the Signa API. Track oppositions and cancellations on any mark with one request.

  • GET/v1/proceedings/{id}

    Parties, dates, outcome and every mark in the case

  • GET/v1/proceedings?trademark_id={trademark_id}

    Every proceeding on a mark

Get API keyView docs
GET /v1/proceedings/{id}
ID=prc_0b34eaa2-87a9-44cb-9d77-59a323643140
curl https://api.signa.so/v1/proceedings/$ID \
  -H "Authorization: Bearer $SIGNA_API_KEY"
Response
{
  "id": "prc_0b34eaa2-87a9-44cb-9d77-59a323643140",
  "object": "proceeding",
  "proceeding_type": "opposition",
  "proceeding_number": "91306132",
  "status": "other",
  "office_code": "US",
  "filed_date": "2026-03-25",
  "parties": [
    {
      "name": "Sonova AG",
      "role": "opponent"
    },
    {
      "name": "Long Chen",
      "role": "respondent"
    }
  ]
}