Unassociated Document

0001144204-07-012328.txt : 20070312 0001144204-07-012328.hdr.sgml : 20070312 20070312172135 ACCESSION NUMBER: 0001144204-07-012328 CONFORMED SUBMISSION TYPE: SC 13G PUBLIC DOCUMENT COUNT: 4 FILED AS OF DATE: 20070312 DATE AS OF CHANGE: 20070312 GROUP MEMBERS: D. E. SHAW & CO., L.L.C. GROUP MEMBERS: D. E. SHAW & CO., L.P. GROUP MEMBERS: DAVID E. SHAW SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: QUIDEL CORP /DE/ CENTRAL INDEX KEY: 0000353569 STANDARD INDUSTRIAL CLASSIFICATION: IN VITRO & IN VIVO DIAGNOSTIC SUBSTANCES [2835] IRS NUMBER: 942573850 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G SEC ACT: 1934 Act SEC FILE NUMBER: 005-35237 FILM NUMBER: 07688629 BUSINESS ADDRESS: STREET 1: 10165 MCKELLAR CT CITY: SAN DIEGO STATE: CA ZIP: 92121 BUSINESS PHONE: 8585521100 FORMER COMPANY: FORMER CONFORMED NAME: MONOCLONAL ANTIBODIES INC /DE/ DATE OF NAME CHANGE: 19910210 FILED BY: COMPANY DATA: COMPANY CONFORMED NAME: D. E. Shaw Meniscus Portfolios, L.L.C. CENTRAL INDEX KEY: 0001324348 IRS NUMBER: 510481096 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G BUSINESS ADDRESS: STREET 1: 39TH FLOOR, TOWER 45 STREET 2: 120 WEST FORTY-FIFTH STREET CITY: NEW YORK STATE: NY ZIP: 10036 BUSINESS PHONE: 212-478-0000 MAIL ADDRESS: STREET 1: 39TH FLOOR, TOWER 45 STREET 2: 120 WEST FORTY-FIFTH STREET CITY: NEW YORK STATE: NY ZIP: 10036 FORMER COMPANY: FORMER CONFORMED NAME: D.E. Shaw Meniscus Portfolios, L.L.C. DATE OF NAME CHANGE: 20050420 SC 13G 1 v068074_sc13g.htm Unassociated Document

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13G

Under the Securities Exchange Act of 1934

Quidel Corporation

(Name of Issuer)

Common Stock

(Title of Class of Securities)

74838J101

(CUSIP Number)

March 1, 2007

(Date of Event Which Requires Filing of this Statement)

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

o	Rule 13d-1(b)
x	Rule 13d-1(c)
o	Rule 13d-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).

CUSIP No. 74838J101

	1.	Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only) D. E. Shaw Meniscus Portfolios, L.L.C. 51-0481096

	2.	Check the Appropriate Box if a Member of a Group (See Instructions)
		(a)		o
		(b)		o

	3.	SEC Use Only

	4.	Citizenship or Place of Organization Delaware

Number of Shares Beneficially Owned by Each Reporting Person With			5.		Sole Voting Power -0-

			6.		Shared Voting Power 1,781,916

			7.		Sole Dispositive Power -0-

			8.		Shared Dispositive Power 1,781,916

	9.	Aggregate Amount Beneficially Owned by Each Reporting Person 1,781,916

	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) 5.3%

	12.	Type of Reporting Person (See Instructions) OO

CUSIP No. 74838J101

	1.	Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only) D. E. Shaw & Co., L.L.C. 13-3799946

	2.	Check the Appropriate Box if a Member of a Group (See Instructions)
		(a)		o
		(b)		o

	3.	SEC Use Only

	4.	Citizenship or Place of Organization Delaware

Number of Shares Beneficially Owned by Each Reporting Person With			5.		Sole Voting Power -0-

			6.		Shared Voting Power 1,781,916

			7.		Sole Dispositive Power -0-

			8.		Shared Dispositive Power 1,781,916

	9.	Aggregate Amount Beneficially Owned by Each Reporting Person 1,781,916

	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) 5.3%

	12.	Type of Reporting Person (See Instructions) OO

CUSIP No. 74838J101

	1.	Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only) D. E. Shaw & Co., L.P. 13-3695715

	2.	Check the Appropriate Box if a Member of a Group (See Instructions)
		(a)		o
		(b)		o

	3.	SEC Use Only

	4.	Citizenship or Place of Organization Delaware

Number of Shares Beneficially Owned by Each Reporting Person With			5.		Sole Voting Power -0-

			6.		Shared Voting Power 1,942,415

			7.		Sole Dispositive Power -0-

			8.		Shared Dispositive Power 1,942,415

	9.	Aggregate Amount Beneficially Owned by Each Reporting Person 1,942,415

	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) 5.8%

	12.	Type of Reporting Person (See Instructions) IA, PN

CUSIP No. 74838J101

	1.	Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only) David E. Shaw

	2.	Check the Appropriate Box if a Member of a Group (See Instructions)
		(a)		o
		(b)		o

	3.	SEC Use Only

	4.	Citizenship or Place of Organization United States

Number of Shares Beneficially Owned by Each Reporting Person With			5.		Sole Voting Power -0-

			6.		Shared Voting Power 1,942,415

			7.		Sole Dispositive Power -0-

			8.		Shared Dispositive Power 1,942,415

	9.	Aggregate Amount Beneficially Owned by Each Reporting Person 1,942,415

	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) 5.8%

	12.	Type of Reporting Person (See Instructions) IN

Item 1.

	(a)	Name of Issuer:
		Quidel Corporation

	(b)	Address of Issuer's Principal Executive Offices:
		10165 McKellar Court San Diego, CA 92121

Item 2.

	(a)	Name of Person Filing:
		D. E. Shaw Meniscus Portfolios, L.L.C. D. E. Shaw & Co., L.L.C. D. E. Shaw & Co., L.P. David E. Shaw

	(b)	Address of Principal Business Office or, if none, Residence:
		The business address for each reporting person is: 120 W. 45^th Street, Tower 45, 39^th Floor New York, NY 10036

	(c)	Citizenship:
		D. E. Shaw Meniscus Portfolios, L.L.C. is a limited liability company organized under the laws of the state of Delaware. D. E. Shaw & Co., L.L.C. is a limited liability company organized under the laws of the state of Delaware. D. E. Shaw & Co., L.P. is a limited partnership organized under the laws of the state of Delaware. David E. Shaw is a citizen of the United States of America.

	(d)	Title of Class of Securities:
		Common Stock

	(e)	CUSIP Number:
		74838J101

Item 3. If this statement is filed pursuant to Rule 13d-1(b) or 13d-2(b) or (c), check whether the person filing is a:

Not applicable

Item 4. Ownership

As of March 7, 2007:

(a) Amount beneficially owned:

D. E. Shaw Meniscus Portfolios, L.L.C.:	1,781,916 shares


D. E. Shaw & Co., L.L.C.:	1,781,916 shares This is composed of 1,781,916 shares in the name of D. E. Shaw Meniscus Portfolios, L.L.C.


D. E. Shaw & Co., L.P.:	1,942,415 shares This is composed of (i) 1,781,916 shares in the name of D. E. Shaw Meniscus Portfolios, L.L.C., (ii) 107,999 shares in the name of D. E. Shaw Valence Portfolios, L.L.C., and (iii) 52,500 shares in the name of D. E. Shaw Valence, L.L.C.

David E. Shaw:

1,942,415 shares

This is composed of (i) 1,781,916 shares in the name of

D. E. Shaw Meniscus Portfolios, L.L.C., (ii) 107,999

shares in the name of D. E. Shaw Valence Portfolios, L.L.C.,

and (iii) 52,500 shares in the name of D. E. Shaw Valence, L.L.C.

(b) Percent of class:
D. E. Shaw Meniscus Portfolios, L.L.C.:	5.3%
D. E. Shaw & Co., L.L.C.:	5.3%
D. E. Shaw & Co., L.P.:	5.8%
David E. Shaw:	5.8%


(c) Number of shares to which the person has:
(i)	Sole power to vote or to direct the vote:
	D. E. Shaw Meniscus Portfolios, L.L.C.:	-0- shares
	D. E. Shaw & Co., L.L.C.:	-0- shares
	D. E. Shaw & Co., L.P.:	-0- shares
	David E. Shaw:	-0- shares

(ii)	Shared power to vote or to direct the vote:
	D. E. Shaw Meniscus Portfolios, L.L.C.:	1,781,916 shares
	D. E. Shaw & Co., L.L.C.:	1,781,916 shares
	D. E. Shaw & Co., L.P.:	1,942,415 shares
	David E. Shaw:	1,942,415 shares

(iii)	Sole power to dispose or to direct the disposition of:
	D. E. Shaw Meniscus Portfolios, L.L.C.:	-0- shares
	D. E. Shaw & Co., L.L.C.:	-0- shares
	D. E. Shaw & Co., L.P.:	-0- shares
	David E. Shaw:	-0- shares

(iv)	Shared power to dispose or to direct the disposition of:
	D. E. Shaw Meniscus Portfolios, L.L.C.:	1,781,916 shares
	D. E. Shaw & Co., L.L.C.:	1,781,916 shares
	D. E. Shaw & Co., L.P.:	1,942,415 shares
	David E. Shaw:	1,942,415 shares

David E. Shaw does not own any shares directly. By virtue of David E. Shaw’s position as President and sole shareholder of D. E. Shaw & Co., Inc., which is the general partner of D. E. Shaw & Co., L.P., which in turn is the investment adviser of D. E. Shaw Meniscus Portfolios, L.L.C., the managing member and investment adviser of D. E. Shaw Valence Portfolios, L.L.C., and the managing member of D. E. Shaw Valence, L.L.C., and by virtue of David E. Shaw’s position as President and sole shareholder of D. E. Shaw & Co. II, Inc., which is the managing member of D. E. Shaw & Co., L.L.C., which in turn is the managing member of D. E. Shaw Meniscus Portfolios, L.L.C., David E. Shaw may be deemed to have the shared power to vote or direct the vote of, and the shared power to dispose or direct the disposition of, the 1,942,415 shares as described above constituting 5.8% of the outstanding shares and, therefore, David E. Shaw may be deemed to be the beneficial owner of such shares. David E. Shaw disclaims beneficial ownership of such 1,942,415 shares.

Item 5. Ownership of Five Percent or Less of a Class

Not Applicable

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 or Control Person

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, each of D. E. Shaw Meniscus Portfolios, L.L.C., D. E. Shaw & Co., L.L.C., D. E. Shaw & Co., L.P., and David E. Shaw certify that, to the best of such reporting person’s 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 such purposes or effect.

SIGNATURE

After reasonable inquiry and to the best of their knowledge and belief, the undersigned certify that the information set forth in this statement is true, complete and correct. Powers of Attorney, dated February 24, 2004, granted by David E. Shaw in favor of Anne Dinning, are attached hereto.

Dated: March 12, 2007

D. E. Shaw Meniscus Portfolios, L.L.C.
By:	D. E. Shaw & Co., L.L.C., as managing member

	By:	/s/ Anne Dinning Anne Dinning Managing Director


	D. E. Shaw & Co., L.L.C.

	By:	/s/ Anne Dinning
		Anne Dinning Managing Director


	D. E. Shaw & Co., L.P.

	By:	/s/ Anne Dinning
		Anne Dinning Managing Director


	David E. Shaw

	By:	/s/ Anne Dinning
		Anne Dinning Attorney-in-Fact for David E. Shaw

EX-1 2 v068074_ex-1.htm

Exhibit 1

POWER OF ATTORNEY

FOR CERTAIN FILINGS

UNDER THE SECURITIES EXCHANGE ACT OF 1934

I, David E. Shaw, hereby make, constitute and appoint each of:

Anne Dinning,

Julius Gaudio,

Lou Salkind,

Stuart Steckler, and

Eric Wepsic,

acting individually, as my agent and attorney-in-fact, with full power of substitution, for the purpose of, from time to time, executing in my name and/or my capacity as President of D. E. Shaw & Co., Inc. (acting for itself or as the general partner of D. E. Shaw & Co., L.P. and general partner or managing member of other entities, any which in turn may be acting for itself or other entities) all documents, certificates, instruments, statement, other filings, and amendments to the forgoing (collectively, “documents”) determined by such person to be necessary or appropriate to comply with ownership or control-person reporting requirements imposed by any United States or non-United States governmental or regulatory authority, including without limitation Forms 3, 4, 5, 13D, 13F, and 13G required to be filed with the Securities and Exchange Commission; and delivering, furnishing or filing any such documents with the appropriate governmental or regulatory authority. Any such determination shall be conclusively evidenced by such person’s execution, delivery, furnishing, and/or filing of the applicable document.

This power of attorney shall be valid from the date hereof and replaces the power granted on February 5, 2001, which is hereby cancelled.

IN WITNESS HEREOF, I have executed this instrument as of the date set forth below.

Date: February 24, 2004

DAVID E. SHAW, as President of

D. E. Shaw & Co., Inc.

/s/ David E. Shaw

New York, New York

EX-2 3 v068074_ex-2.htm

Exhibit 2

POWER OF ATTORNEY

FOR CERTAIN FILINGS

UNDER THE SECURITIES EXCHANGE ACT OF 1934

I, David E. Shaw, hereby make, constitute and appoint each of:

Anne Dinning,

Julius Gaudio,

Lou Salkind,

Stuart Steckler, and

Eric Wepsic,

acting individually, as my agent and attorney-in-fact, with full power of substitution, for the purpose of, from time to time, executing in my name and/or my capacity as President of D. E. Shaw & Co. II, Inc. (acting for itself and as the managing member of D. E. Shaw & Co., L.L.C., which in turn may be acting for itself or as the managing member of other companies) all documents, certificates, instruments, statement, other filings and amendments to the forgoing (collectively, “documents”) determined by such person to be necessary or appropriate to comply with ownership or control-person reporting requirements imposed by any United States or non-United States governmental or regulatory authority, including without limitation Forms 3, 4, 5, 13D, 13F and 13G required to be filed with the Securities and Exchange Commission; and delivering, furnishing or filing any such documents with the appropriate governmental or regulatory authority. Any such determination shall be conclusively evidenced by such person’s execution and delivery, furnishing or filing of the applicable document.

This power of attorney shall be valid from the date hereof and replaces the power granted on February 5, 2001, which is hereby cancelled.

IN WITNESS HEREOF, I have executed this instrument as of the date set forth below.

Date: February 24, 2004

DAVID E. SHAW, as President of

D. E. Shaw & Co. II, Inc.

/s/ David E. Shaw

New York, New York

EX-3 4 v068074_ex-3.htm

Exhibit 3

JOINT FILING AGREEMENT

In accordance with Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, as amended, each of the undersigned Reporting Persons hereby agrees to the joint filing, along with all other such Reporting Persons, on behalf of each of them of a statement on Schedule 13G (including amendments thereto) with respect to the Common Stock of Quidel Corporation, and that this Agreement be included as an Exhibit to such joint filing. This Agreement may be executed in any number of counterparts, all of which taken together shall constitute one and the same instrument.

IN WITNESS WHEREOF, each of the undersigned hereby executes this Agreement as of this 12th day of March, 2007.

D. E. Shaw Meniscus Portfolios, L.L.C.
By:	D. E. Shaw & Co., L.L.C., as managing member

	By:	/s/ Anne Dinning Anne Dinning Managing Director


	D. E. Shaw & Co., L.L.C.

	By:	/s/ Anne Dinning
		Anne Dinning Managing Director


	D. E. Shaw & Co., L.P.

	By:	/s/ Anne Dinning
		Anne Dinning Managing Director


	David E. Shaw

	By:	/s/ Anne Dinning
		Anne Dinning Attorney-in-Fact for David E. Shaw