Common use of FORM OF ASSIGNMENT AND ASSUMPTION Clause in Contracts

FORM OF ASSIGNMENT AND ASSUMPTION. By: ------------------------------- Title: ASSIGNEE [NAME OF ASSIGNEE] By: ------------------------------- Title: [Consented to and] Accepted: BANK OF AMERICA, N.A., as Agent By: ------------------------------- Title: (12) [BORROWER] By: ------------------------------- Title:

FORM OF ASSIGNMENT AND ASSUMPTION. The terms set forth in this Assignment and Assumption are hereby agreed to: [NAME OF ASSIGNOR] By: ------------------------------- _____________________________ Title: ASSIGNEE [NAME OF ASSIGNEE] By: ------------------------------- _____________________________ Title: [Consented to and] Accepted: BANK OF AMERICA, N.A., as Administrative Agent By: ------------------------------- _________________________________ Title: (12) : [BORROWER] Consented to:] By: ------------------------------- _________________________________ Title:: Form of Assignment and Assumption

FORM OF ASSIGNMENT AND ASSUMPTION. The terms set forth in this Assignment and Assumption are hereby agreed to: ASSIGNOR [NAME OF ASSIGNOR] By: ------------------------------- ------------------------------------ Title: --------------------------------- ASSIGNEE [NAME OF ASSIGNEE] By: ------------------------------- ------------------------------------ Title: [--------------------------------- Consented to and] and Accepted: BANK OF AMERICA, N.A., as Administrative Agent By: ------------------------------- --------------------------------- Title:: ------------------------------ (1213) [BORROWER] BIOGEN IDEC INC. By: ------------------------------- --------------------------------- Title:: ------------------------------

FORM OF ASSIGNMENT AND ASSUMPTION. The terms set forth in this Assignment and Assumption are hereby agreed to: [NAME OF ASSIGNOR] By: ------------------------------- Name: Title: ASSIGNEE [NAME OF ASSIGNEE] By: ------------------------------- Name: Title: [Consented to and] and](11) Accepted: BANK OF AMERICA, N.A., as Administrative Agent By: ------------------------------- Name: Title: [Consented to:](12) By: Name: Title: (12) [BORROWER] By: ------------------------------- Title:

FORM OF ASSIGNMENT AND ASSUMPTION. The terms set forth in this Assignment and Assumption are hereby agreed to: ASSIGNOR [NAME OF ASSIGNOR] By: ------------------------------- _____________________________ Title: ASSIGNEE [NAME OF ASSIGNEE] By: ------------------------------- _____________________________ Title: [Consented to and] CONSENTED TO AND](6) Accepted: BANK OF AMERICA, N.A., as Administrative Agent By: ------------------------------- _________________________________ Title: (12) [BORROWER] By: ------------------------------- Title: