Opposition · USPTO

Opposition 91302171

OtherUSPTO

Opposition 91302171 at USPTO between Sanofi Pasteur and Dusheng AO Limited, over the mark VIGMELO, filed Oct 3, 2025. Status in the office record: other.

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Status
Other
Result
Other
Filed
Oct 3, 2025
Marks involved
2
Parties

Who is involved

The parties as named in the office record.

Opponent

Sanofi Pasteur

Company trademarks
Respondent

Dusheng AO Limited

Timeline

How the case has moved

Dates from the USPTO record and the VIGMELO filing.

  1. VIGMELO filed

    Application 99002289 filed at the USPTO.

  2. Opposition filed

    Sanofi Pasteur started opposition 91302171 at USPTO against VIGMELO.
Marks

Marks involved

1 contested mark, 1 mark the challenger relies on.

MarkRoleApplicationOffice
VIGMELOContested99002289USPTO
VYGIALORelied on99061164USPTO
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_0c2231ed-7c4b-4fa8-bc31-73fe5ef77ae4
curl https://api.signa.so/v1/proceedings/$ID \
  -H "Authorization: Bearer $SIGNA_API_KEY"
Response
{
  "id": "prc_0c2231ed-7c4b-4fa8-bc31-73fe5ef77ae4",
  "object": "proceeding",
  "proceeding_type": "opposition",
  "proceeding_number": "91302171",
  "status": "other",
  "office_code": "US",
  "filed_date": "2025-10-03",
  "parties": [
    {
      "name": "Sanofi Pasteur",
      "role": "opponent"
    },
    {
      "name": "Dusheng AO Limited",
      "role": "respondent"
    }
  ]
}