Merck & Co., Inc.

Pharmaceutical Preparations

NYSE.MRK

2000 Galloping Hill Road, Kenilworth, NJ, 07033

Indentures

EX-4.1
Ex-4.1
from 8-K17 May 23
EX-4.2
Ex-4.2
from 8-K17 May 23
EX-4.3
Ex-4.3
from 8-K17 May 23
EX-4.4
Ex-4.4
from 8-K17 May 23
EX-4.5
Ex-4.5
from 8-K17 May 23
EX-4.6
Ex-4.6
from 8-K17 May 23
EX-4.1
Ex-4.1
from 8-K10 Dec 21
EX-4.2
Ex-4.2
from 8-K10 Dec 21
EX-4.3
Ex-4.3
from 8-K10 Dec 21
EX-4.4
Ex-4.4
from 8-K10 Dec 21
EX-4.5
Ex-4.5
from 8-K10 Dec 21
EX-4.10
Ex-4.10 Description Of Merck Common Stock
from 10-K25 Feb 21
EX-4.11
Ex-4.11 Description Of 2021 Notes, 2026 Notes, And 2034 Notes
from 10-K25 Feb 21
EX-4.12
Ex-4.12 Description Of 2024 Notes And 2036 Notes
from 10-K25 Feb 21
EX-4.1
Ex-4.1
from 8-K24 Jun 20
EX-4.2
Ex-4.2
from 8-K24 Jun 20
EX-4.3
Ex-4.3
from 8-K24 Jun 20
EX-4.4
Ex-4.4
from 8-K24 Jun 20
EX-4.1
Ex-4.1
from 8-K07 Mar 19
EX-4.2
Ex-4.2
from 8-K07 Mar 19
EX-4.3
Ex-4.3
from 8-K07 Mar 19
EX-4.4
Ex-4.4
from 8-K07 Mar 19
EX-4.1
Ex-4.1
from 8-K02 Nov 16
EX-4.2
Ex-4.2
from 8-K02 Nov 16
EX-4.1
Ex-4.1
from 8-K10 Feb 15
EX-4.2
Ex-4.2
from 8-K10 Feb 15
EX-4.3
Ex-4.3
from 8-K10 Feb 15
EX-4.4
Ex-4.4
from 8-K10 Feb 15
EX-4.5
Ex-4.5
from 8-K10 Feb 15
EX-4.6
Ex-4.6
from 8-K10 Feb 15
EX-4.1
Ex-4.1
from 8-K20 May 13
EX-4.2
Ex-4.2
from 8-K20 May 13
EX-4.3
Ex-4.3
from 8-K20 May 13
EX-4.4
Ex-4.4
from 8-K20 May 13
EX-4.5
Ex-4.5
from 8-K20 May 13
EX-4.6
Ex-4.6
from 8-K20 May 13
EX-4.1
Ex-4.1
from 8-K13 Sep 12
EX-4.2
Ex-4.2
from 8-K13 Sep 12
EX-4.3
Ex-4.3
from 8-K13 Sep 12
EX-4.1
Third Supplemental Indenture, Dated May 1, 2012
from 10-Q08 May 12
EX-4.1
Indenture
from 8-K10 Dec 10
EX-4.2
2.250% Notes
from 8-K10 Dec 10
EX-4.3
3.875% Notes
from 8-K10 Dec 10
EX-4.(A)
Form Of Indenture
from S-3ASR18 Dec 09
EX-4.3
Second Supplemental Indenture Dated As Of November 3, 2009
from 8-K04 Nov 09
EX-4.4
Fifth Supplemental Indenture, Dated As Of November 3, 2009
from 8-K04 Nov 09
EX-4.1
Ex-4.1: Third Supplemental Indenture
from 8-K17 Sep 07
EX-4
Ex-4: Certificate Of Amendment To Certificate Of Incorporation
from 8-K13 Aug 07
EX-4
Ex-4: Form Of Certificate Of Amendment
from 8-A12B09 Aug 07
EX-4.3
Ex-4.3: Schering-plough Employees' Savings Plan
from S-819 May 06
EX-4.1
Ex-4.1 Savings Advantage Plan
from S-808 Dec 04
EX-4
Exhibit 4.1 -- Certificate Of Amendment
from 8-A12B06 Aug 04
EX-4
Exhibit 4.1
from S-302 Mar 04
EX-4
Exhibit 4.4
from S-302 Mar 04
EX-4.C.IV
Global Note
from 10-K26 Feb 04
EX-4.C.V
Global Note
from 10-K26 Feb 04
EX-4.1
Indenture
from 8-K28 Nov 03
EX-4.2
1st Supplemental Indenture
from 8-K28 Nov 03
EX-4.3
2nd Supplemental Indenture
from 8-K28 Nov 03
EX-4
from 10-K10 Mar 03
EX-4
from 10-K10 Mar 03
EX-4
Exhibit 4.1
from S-305 Feb 03
EX-4
Exhibit 4.2
from S-305 Feb 03
EX-4
Exhibit 4 Bylaws
from 10-Q15 May 01
EX-4
Amendment To By-laws
from 10-Q09 Nov 98
EX-4
from S-830 Jun 97
EX-4.2
By-laws
from S-312 Feb 96
EX-4.6
Participation Rights Agreement
from S-4/A29 Dec 95
EX-4.6
Form Of Paticipating Rights Agreement
from S-418 Dec 95
EX-4
Exhibit 4.2
from S-829 Dec 94

Indentures

EX-4.1
Ex-4.1
from 8-K17 May 23
EX-4.2
Ex-4.2
from 8-K17 May 23
EX-4.3
Ex-4.3
from 8-K17 May 23
EX-4.4
Ex-4.4
from 8-K17 May 23
EX-4.5
Ex-4.5
from 8-K17 May 23
EX-4.6
Ex-4.6
from 8-K17 May 23
EX-4.1
Ex-4.1
from 8-K10 Dec 21
EX-4.2
Ex-4.2
from 8-K10 Dec 21
EX-4.3
Ex-4.3
from 8-K10 Dec 21
EX-4.4
Ex-4.4
from 8-K10 Dec 21
EX-4.5
Ex-4.5
from 8-K10 Dec 21
EX-4.10
Ex-4.10 Description Of Merck Common Stock
from 10-K25 Feb 21
EX-4.11
Ex-4.11 Description Of 2021 Notes, 2026 Notes, And 2034 Notes
from 10-K25 Feb 21
EX-4.12
Ex-4.12 Description Of 2024 Notes And 2036 Notes
from 10-K25 Feb 21
EX-4.1
Ex-4.1
from 8-K24 Jun 20
EX-4.2
Ex-4.2
from 8-K24 Jun 20
EX-4.3
Ex-4.3
from 8-K24 Jun 20
EX-4.4
Ex-4.4
from 8-K24 Jun 20
EX-4.1
Ex-4.1
from 8-K07 Mar 19
EX-4.2
Ex-4.2
from 8-K07 Mar 19
EX-4.3
Ex-4.3
from 8-K07 Mar 19
EX-4.4
Ex-4.4
from 8-K07 Mar 19
EX-4.1
Ex-4.1
from 8-K02 Nov 16
EX-4.2
Ex-4.2
from 8-K02 Nov 16
EX-4.1
Ex-4.1
from 8-K10 Feb 15
EX-4.2
Ex-4.2
from 8-K10 Feb 15
EX-4.3
Ex-4.3
from 8-K10 Feb 15
EX-4.4
Ex-4.4
from 8-K10 Feb 15
EX-4.5
Ex-4.5
from 8-K10 Feb 15
EX-4.6
Ex-4.6
from 8-K10 Feb 15
EX-4.1
Ex-4.1
from 8-K20 May 13
EX-4.2
Ex-4.2
from 8-K20 May 13
EX-4.3
Ex-4.3
from 8-K20 May 13
EX-4.4
Ex-4.4
from 8-K20 May 13
EX-4.5
Ex-4.5
from 8-K20 May 13
EX-4.6
Ex-4.6
from 8-K20 May 13
EX-4.1
Ex-4.1
from 8-K13 Sep 12
EX-4.2
Ex-4.2
from 8-K13 Sep 12
EX-4.3
Ex-4.3
from 8-K13 Sep 12
EX-4.1
Third Supplemental Indenture, Dated May 1, 2012
from 10-Q08 May 12
EX-4.1
Indenture
from 8-K10 Dec 10
EX-4.2
2.250% Notes
from 8-K10 Dec 10
EX-4.3
3.875% Notes
from 8-K10 Dec 10
EX-4.(A)
Form Of Indenture
from S-3ASR18 Dec 09
EX-4.3
Second Supplemental Indenture Dated As Of November 3, 2009
from 8-K04 Nov 09
EX-4.4
Fifth Supplemental Indenture, Dated As Of November 3, 2009
from 8-K04 Nov 09
EX-4.1
Ex-4.1: Third Supplemental Indenture
from 8-K17 Sep 07
EX-4
Ex-4: Certificate Of Amendment To Certificate Of Incorporation
from 8-K13 Aug 07
EX-4
Ex-4: Form Of Certificate Of Amendment
from 8-A12B09 Aug 07
EX-4.3
Ex-4.3: Schering-plough Employees' Savings Plan
from S-819 May 06
EX-4.1
Ex-4.1 Savings Advantage Plan
from S-808 Dec 04
EX-4
Exhibit 4.1 -- Certificate Of Amendment
from 8-A12B06 Aug 04
EX-4
Exhibit 4.1
from S-302 Mar 04
EX-4
Exhibit 4.4
from S-302 Mar 04
EX-4.C.IV
Global Note
from 10-K26 Feb 04
EX-4.C.V
Global Note
from 10-K26 Feb 04
EX-4.1
Indenture
from 8-K28 Nov 03
EX-4.2
1st Supplemental Indenture
from 8-K28 Nov 03
EX-4.3
2nd Supplemental Indenture
from 8-K28 Nov 03
EX-4
from 10-K10 Mar 03
EX-4
from 10-K10 Mar 03
EX-4
Exhibit 4.1
from S-305 Feb 03
EX-4
Exhibit 4.2
from S-305 Feb 03
EX-4
Exhibit 4 Bylaws
from 10-Q15 May 01
EX-4
Amendment To By-laws
from 10-Q09 Nov 98
EX-4
from S-830 Jun 97
EX-4.2
By-laws
from S-312 Feb 96
EX-4.6
Participation Rights Agreement
from S-4/A29 Dec 95
EX-4.6
Form Of Paticipating Rights Agreement
from S-418 Dec 95
EX-4
Exhibit 4.2
from S-829 Dec 94