Opposition · USPTO

Opposition 91309858

PendingUSPTO

Opposition 91309858 at USPTO between Prosperodes GmbH and Shennon Biotechnologies, over the mark SERIS, filed Aug 24, 2026. Status in the office record: pending.

View SERISGet this data via the API
Status
Pending
Filed
Aug 24, 2026
Marks involved
2
Parties

Who is involved

The parties as named in the office record.

Opponent

Prosperodes GmbH

Respondent

Shennon Biotechnologies

Timeline

How the case has moved

Dates from the USPTO record and the SERIS filing.

  1. SERIS filed

    Application 99673451 filed at the USPTO.

  2. Opposition filed

    Prosperodes GmbH started opposition 91309858 at USPTO against SERIS.
  3. Next

    Awaiting decision

    No decision is recorded at USPTO yet.
Marks

Marks involved

1 contested mark, 1 mark the challenger relies on.

MarkRoleApplicationOffice
SERISContested99673451USPTO
SERASRelied on98785419USPTO
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_a8ecbde4-34be-4e3a-b075-1a56d483abfb
curl https://api.signa.so/v1/proceedings/$ID \
  -H "Authorization: Bearer $SIGNA_API_KEY"
Response
{
  "id": "prc_a8ecbde4-34be-4e3a-b075-1a56d483abfb",
  "object": "proceeding",
  "proceeding_type": "opposition",
  "proceeding_number": "91309858",
  "status": "pending",
  "office_code": "US",
  "filed_date": "2026-08-24",
  "parties": [
    {
      "name": "Prosperodes GmbH",
      "role": "opponent"
    },
    {
      "name": "Shennon Biotechnologies",
      "role": "respondent"
    }
  ]
}