CHIESI FARMACEUTICI S.p.A. (P) vs Amylyx Pharmaceuticals, Inc. (D)

Terminated
Extensions of Time to Oppose

Proceeding Details

Proceeding Number

Filing Date

Feb 6, 2026

Last Status Update

May 20, 2026

Interlocutory Attorney

Not Assigned

Parties

Plaintiff

CHIESI FARMACEUTICI S.p.A.

VORYS, SATER, SEYMOUR AND PEASE LLP

1909 K ST., NW 9TH FLOOR

WASHINGTON, DC 20006

Attorney / Correspondent:

MARYELLEN FEEHERY HANKVORYS, SATER, SEYMOUR AND PEASE LLP

1909 K ST., NW 9TH FLOOR

WASHINGTON, DC 20006

VS

Defendant

ELYBRIO
Amylyx Pharmaceuticals, Inc.

FISH & RICHARDSON P.C.

PO BOX 1022

MINNEAPOLIS, MN 55440-1022

Attorney / Correspondent:

CYNTHIA JOHNSON WALDENFISH & RICHARDSON P.C.

PO BOX 1022

MINNEAPOLIS, MN 55440-1022

Mark:

ELYBRIO
Abandoned
S/N: 99444768

TTAB Documents

Title
Date
Entry #
Category
Code
Actions
EXT GRANTED
Feb 6, 2026
2
Extensions
1011
FIRST 90-DAY REQUEST TO EXT TIME TO OPPOSE
Feb 6, 2026
1
Extensions
1009

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