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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13G/A

Under the Securities Exchange Act of 1934
(Amendment No. 1)*

Juniper Networks, Inc.


(Name of Issuer)

Common Stock, $.00001 par value


(Title of Class of Securities)

48203R104


(CUSIP Number)

December 17, 2004


(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

        o Rule13d-1(b)

        þ Rule13d-1(c)

        o Rule13d-1(d)

*The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

Persons who respond to the collection of Information contained in this form are not
required to respond unless the form displays a currently valid OMB control number.

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Table of Contents

             
CUSIP No. 48203R104

  1. Names of Reporting Persons.     Siemens Corporation
I.R.S. Identification Nos. of above persons (entities only).

  2. Check the Appropriate Box if a Member of a Group (See Instructions):
    (a) o Not applicable  
    (b) o Not applicable  

  3. SEC Use Only

  4. Citizenship or Place of Organization     Delaware, United States of America

Number of
Shares
Beneficially
Owned by
Each Reporting
Person With:
5. Sole Voting Power Not Applicable          

6. Shared Voting Power 22,815,206          

7. Sole Dispositive Power Not Applicable          

8. Shared Dispositive Power 22,815,206          

  9. Aggregate Amount Beneficially Owned by Each Reporting Person: 22,815,206          

  10. Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) o        

  11. Percent of Class Represented by Amount in Row (9) 4.24%          

  12. Type of Reporting Person (See Instructions) CO          

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Table of Contents

             
CUSIP No. 48203R104

  1. Names of Reporting Persons.     Siemens Aktiengesellschaft
I.R.S. Identification Nos. of above persons (entities only).

  2. Check the Appropriate Box if a Member of a Group (See Instructions):
    (a) o Not applicable  
    (b) o Not applicable  

  3. SEC Use Only

  4. Citizenship or Place of Organization     Federal Republic of Germany

Number of
Shares
Beneficially
Owned by
Each Reporting
Person With:
5. Sole Voting Power Not Applicable          

6. Shared Voting Power 22,815,206          

7. Sole Dispositive Power Not Applicable          

8. Shared Dispositive Power 22,815,206          

  9. Aggregate Amount Beneficially Owned by Each Reporting Person: 22,815,206          

  10. Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) o        

  11. Percent of Class Represented by Amount in Row (9) 4.24%          

  12. Type of Reporting Person (See Instructions) CO          

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TABLE OF CONTENTS

Item 1. Name of Issuer:
Item 2. Name of Person Filing:
Item 3. If this statement is filed pursuant to 240.13d-1(b) or 240.13d-2(b) or (c)
Item 4. Ownership:
Item 5. Ownership of Five Percent or Less of a Class.
Item 6. Ownership of More than Five Percent on Behalf of Another Person.
ITEM 7. Identification and Classification of the Subsidiary
ITEM 8. Identification and Classification of Members of the Group.
ITEM 9. Notice of Dissolution of Group.
ITEM 10. Certification:
SIGNATURE
SIGNATURE
AGREEMENT OF JOINT FILING


Table of Contents

         
Item 1.      
 
    (a)  
Name of Issuer:
       
Juniper Networks, Inc.
    (b)  
Address of Issuer’s Principal Executive Offices:
       
1194 North Mathilda Avenue
Sunnyvale, CA 94089
         
Item 2.      
 
    (a)  
Name of Person Filing:
       
(1) Siemens Corporation
       
(2) Siemens Aktiengesellschaft
    (b)  
Address of Principal Business Office or, if none, Residence:
       
The address of the principal business office of each person filing is:
       
(1) 153 East 53rd Street, New York, New York 10022
       
(2) Wittelsbacherplatz 2, 80333 Munich, Germany
    (c)  
Citizenship:
       
The first person filing is a corporation organized under the laws of the State of Delaware, United States of America. The second person filing is a corporation organized under the law of the Federal Republic of Germany.
    (d)  
Title of Class of Securities:
       
Common Stock, $.00001 Par Value
    (e)  
CUSIP Number
       
48203R104
     
Item 3.
  If this statement is filed pursuant to §~240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
           
  (a)   o   Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o).
  (b)   o   Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c).
  (c)   o   Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c).
  (d)   o   Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C 80a-8).
  (e)   o   An investment adviser in accordance with §240.13d-1(b)(1)(ii)(E);
  (f)   o   An employee benefit plan or endowment fund in accordance with §240.13d-1(b)(1)(ii)(F);
  (g)   o   A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
  (h)   o   A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
  (i)   o   A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
  (j)   o   Group, in accordance with §240.13d-1(b)(l)(ii)(J)
Not applicable.

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Item 4.
  Ownership:
           
 
(a)   Amount beneficially owned:   22,815,206
(b)   Percent of class: 4.24
(c)   Number of shares as to which the person has:
 
    (i)   Sole power to vote or to direct the vote:     Not applicable
 
    (ii)   Shared power to vote or to direct the vote:     22,815,206
 
    (iii)   Sole power to dispose or to direct the disposition of:     Not applicable
 
    (iv)   Shared power to dispose or to direct the disposition of:     22,815,206
     
Item 5.
  Ownership of Five Percent or Less of a Class.

If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following þ.

     
Item 6.  
Ownership of More than Five Percent on Behalf of Another Person.
   
Not applicable
Item 7.  
Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company.
   
Not applicable
Item 8.  
Identification and Classification of Members of the Group.
   
Not applicable
Item 9.  
Notice of Dissolution of Group.
   
Not applicable
Item 10.  
Certification:

     By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect.

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SIGNATURE

     After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

         
  February 8, 2005

SIEMENS CORPORATION


 
  By:   /s/ E. ROBERT LUPONE  
       E. Robert Lupone
Senior Vice President,
General Counsel and Secretary
 
 
     
  By:   /s/ MICHAEL W. SCHIEFEN  
       Michael W. Schiefen
Vice President 
 

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SIGNATURE

     After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

         
  February 8, 2005

SIEMENS AKTIENGESELLSCHAFT


 
  By:   /s/ Dr. PAUL HOBECK  
       Dr. Paul Hobeck
General Counsel
 
 
     
  By:   /s/ Dr. PETER MORITZ  
       Dr. Peter Moritz
Corporate Vice President & Treasurer
 

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AGREEMENT OF JOINT FILING

     Pursuant to Rule 13d-1(k)(1) of the Securities and Exchange Commission under the Securities and Exchange Act of 1934, as amended, each of the undersigned agrees that the statement on Schedule 13G/A filed herewith shall be filed on behalf of each of the undersigned.

         
  February 8, 2005

SIEMENS CORPORATION


 
  By:   /s/ E. ROBERT LUPONE  
       E. Robert Lupone  
       Senior Vice President,
General Counsel and Secretary
 
 
     
  By:   /s/ MICHAEL W. SCHIEFEN  
       Michael W. Schiefen  
       Vice President  
 
 

February 8, 2005

SIEMENS AKTIENGESELLSCHAFT


 
  By:   /s/ Dr. PAUL HOBECK  
       Dr. Paul Hobeck   
       General Counsel   
 
     
  By:   /s/ Dr. PETER MORITZ  
       Dr. Peter Moritz   
       Corporate Vice President & Treasurer   
 

 

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