Opposition 91310337
PendingUSPTO
Opposition 91310337 at USPTO between Regeneron Pharmaceuticals, Inc. and PureTech Health LLC, over the mark CELEA THERAPEUTICS, filed Sep 14, 2026. Status in the office record: pending.
- Status
- Pending
- Filed
- Sep 14, 2026
- Marks involved
- 9
Parties
Who is involved
The parties as named in the office record.
Timeline
How the case has moved
Dates from the USPTO record and the CELEA THERAPEUTICS filing.
CELEA THERAPEUTICS filed
Application 99382421 filed at the USPTO.Opposition filed
Regeneron Pharmaceuticals, Inc. started opposition 91310337 at USPTO against CELEA THERAPEUTICS.- Next
Awaiting decision
No decision is recorded at USPTO yet.
Marks
Marks involved
1 contested mark, 8 marks the challenger relies on.
| Mark | Role | Application | Office |
|---|---|---|---|
| CELEA THERAPEUTICS | Contested | 99382421 | USPTO |
| EYLEA | Relied on | 77510978 | USPTO |
| EYLEA | Relied on | 85209921 | USPTO |
| EYLEA4U | Relied on | 85327081 | USPTO |
| EYLEA (AFLIBERCEPT) INJECTION 4U | Relied on | 85955455 | USPTO |
| EYLEA | Relied on | 87722615 | USPTO |
| EYLEA HD | Relied on | 97264271 | USPTO |
| EYLEA4U | Relied on | 97934364 | USPTO |
| EYLEA HD AHEAD | Relied on | 98542694 | USPTO |
API
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GET/v1/proceedings/{id}Parties, dates, outcome and every mark in the case
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GET /v1/proceedings/{id}
ID=prc_383ee848-7397-4f01-878a-f7ffb4a8eab1
curl https://api.signa.so/v1/proceedings/$ID \
-H "Authorization: Bearer $SIGNA_API_KEY"Response
{
"id": "prc_383ee848-7397-4f01-878a-f7ffb4a8eab1",
"object": "proceeding",
"proceeding_type": "opposition",
"proceeding_number": "91310337",
"status": "pending",
"office_code": "US",
"filed_date": "2026-09-14",
"parties": [
{
"name": "Regeneron Pharmaceuticals, Inc.",
"role": "opponent"
},
{
"name": "PureTech Health LLC",
"role": "respondent"
}
]
}