6-K

FORM 6-K

SECURITIES AND EXCHANGE COMMISSION

Washington D.C. 20549

REPORT OF FOREIGN ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16 OF THE

SECURITIES EXCHANGE ACT OF 1934

For the month of July, 2009

__________

Commission File Number: 001-32371

__________

SINOVAC BIOTECH LTD.

39 Shangdi Xi Road

Haidian District

Beijing 100085, People’s Republic of China

(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F.

Form 20-F X                  Form 40-F  _______

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1):________________

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7):________________

Indicate by check mark whether by furnishing the information contained in this Form, the registrant is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.

Yes  _______          No X      

If "Yes" is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b):

82- N/A     

SINOVAC BIOTECH LTD.

Form 6-K

TABLE OF CONTENTS

	Page
Signature	3
Exhibit 99.1 – Press Release	4

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	SINOVAC BIOTECH LTD.
	By:	/s/ Weidong Yin
		Name:   Weidong Yin
		Title:      Chief Executive Officer, President
Date:  July 15, 2009

EX-99.1

Exhibit 99.1

Sinovac Adjourns 2008 Annual General Meeting

BEIJING, July 16 /PRNewswire-Asia/ -- Sinovac Biotech Ltd. (NYSE Amex: SVA), a leading developer and provider of vaccines in China, announced today that its Annual General Meeting originally scheduled for July 16, 2009 has been adjourned to July 30, 2009.

At the July 16, 2009 Annual General Meeting, the required quorum of a majority of the outstanding shares was not present. In accordance with Antigua law, the meeting is adjourned to July 30, 2009 (the same day two weeks after July 16, 2009), at 9 a.m. Beijing time at Sinovac's headquarters located at No. 39, Shangdi Xi Rd., Haidian District, Beijing, PRC (the same time and place as the originally scheduled meeting). Under Antigua law and in compliance with NYSE Amex Equities requirements, if a quorum is not present within thirty minutes of the appointed time for holding the adjourned meeting, the shareholders then present representing at least one-third of the total outstanding shares will constitute a quorum.

The adjourned Annual General meeting will not affect Sinovac's normal course of business. We highly encourage our shareholders to submit their votes before July 30, 2009.

About Sinovac

Sinovac Biotech Ltd. is a China-based biopharmaceutical company that focuses on the research, development, manufacture and commercialization of vaccines that protect against human infectious diseases. Sinovac's commercialized vaccines include Healive® (hepatitis A), Bilive® (combined hepatitis A and B), Anflu® (influenza) and Panflu(TM) (H5N1). Sinovac is currently developing Universal Pandemic Influenza vaccine and Japanese encephalitis vaccine. Additional information about Sinovac is available on its website, http://www.sinovac.com . To be added to our distribution list, please email: info@sinovac.com.

Safe Harbor Statement

This announcement contains forward-looking statements. These statements are made under the "safe harbor" provisions of the U.S. Private Securities Litigation Reform Act of 1995. These forward-looking statements can be identified by words or phrases such as "will," "expects," "anticipates," "future," "intends," "plans," "believes," "estimates" and similar statements. Among other things, the business outlook and quotations from management in this press release contain forward-looking statements. Statements that are not historical facts, including statements about Sinovac's beliefs and expectations, are forward-looking statements. Forward-looking statements involve inherent risks and uncertainties. A number of important factors could cause actual results to differ materially from those contained in any forward- looking statement. Sinovac does not undertake any obligation to update any forward-looking statement, except as required under applicable law.

   For more information, please contact:

     Helen G. Yang

     Sinovac Biotech Ltd.

     Tel:   +86-10-8289-0088 x9871

     Fax:   +86-10-6296-6910

     Email: info@sinovac.com

    Investors:

     Amy Glynn/Sara Pellegrino

     The Ruth Group

     Tel:   +1-646-536-7023/7002

     Email: aglynn@theruthgroup.com

                spellegrino@theruthgroup.com

    Media

     Janine McCargo

     The Ruth Group

     Tel:   +1-656-536-7033

     Email: jmccargo@theruthgroup.com