UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, DC 20549


                                    FORM 8-K


                             CURRENT REPORT PURSUANT
                          TO SECTION 13 OR 15(D) OF THE
                         SECURITIES EXCHANGE ACT OF 1934


       Date of report (Date of earliest event reported) February 17, 2009

                             ALIGN TECHNOLOGY, INC.
- --------------------------------------------------------------------------------
             (Exact Name of Registrant as Specified in Its Charter)

                                    Delaware
- --------------------------------------------------------------------------------
                 (State or Other Jurisdiction of Incorporation)

                 0-32259                             94-3267295
- --------------------------------------------------------------------------------
        (Commission File Number)          (IRS Employer Identification No.)


        881 Martin Avenue, Santa Clara, California              95050
- --------------------------------------------------------------------------------
         (Address of Principal Executive Offices)            (Zip Code)

                                 (408) 470-1000
- --------------------------------------------------------------------------------
              (Registrant's Telephone Number, Including Area Code)

                                 Not applicable
- --------------------------------------------------------------------------------
          (Former Name or Former Address, if Changed Since Last Report)

      Check the appropriate box below if the Form 8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any of the
following provisions (see General Instruction A.2. below):

|_|   Written communications pursuant to Rule 425 under the Securities Act (17
      CFR 230.425)

|_|   Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR
      240.14a-12)

|_|   Pre-commencement communications pursuant to Rule 14d-2(b) under the
      Exchange Act (17 CFR 240.14d-2(b))

|_|   Pre-commencement communications pursuant to Rule 13e-4(c) under the
      Exchange Act (17 CFR 240.13e-4(c))

ITEM 8.01 Other Events. On February 17, 2009, Align Technology, Inc. (the "Company") filed a press release responding to litigation filed by ClearCorrect against the Company in the United States District Court for the Southern District of Texas, Houston Division. A copy of the press release issued by the Company on February 18, 2009 is attached hereto as Exhibit 99.1 and is incorporated by reference. Item 9.01. Financial Statements and Exhibits (d) Exhibits. The following exhibit is furnished with this report: 99.1 Press Release issued February 18, 2009

SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. Dated: February 18, 2009 ALIGN TECHNOLOGY, INC. By: /s/ Roger E. George -------------------------------------- Roger E. George Vice President, Legal and Corporate Affairs, General Counsel and Corporate Secretary

INDEX TO EXHIBITS Exhibit No. Description - ----------- ----------- 99.1 Press Release issued February 18, 2009

        Align Technology Asserts ClearCorrect Complaint Is Without Merit

SANTA CLARA, Calif., Feb. 18 /PRNewswire-FirstCall/ -- Align Technology, Inc.
(Nasdaq: ALGN) today announced that the Company has been notified of a purported
declaratory judgment action filed against the Company on February 17, 2009 by
ClearCorrect, Inc. in the United States District Court for the Southern District
of Texas. Align Technology became aware of the filing on February 17, 2009, but
has not been served with a copy of the Complaint.

In the Complaint, assigned case # H-09-470 and captioned ClearCorrect, Inc.,
Plaintiff, vs. Align Technology, Inc., Defendant, ClearCorrect alleges that a
"controversy exists between Align and ClearCorrect concerning the validity of
Align's patents that relate to the manufacture and sale of a clear aligner
therapy system" and regarding "the infringement of Align's patents" by
ClearCorrect. The Complaint seeks a judgment declaring that unidentified Align
patents are invalid and unenforceable and that ClearCorrect does not infringe
the unidentified Align patents.

Align Technology is not currently involved in any litigation with ClearCorrect,
nor has Align previously communicated with ClearCorrect regarding the subject
matter of the Complaint or any of Align's 165 issued patents. ClearCorrect's
Complaint is entirely unrelated to a previous lawsuit filed by Align Technology
against Dr. Willis Pumphrey, ClearCorrect's CEO, for breach of contract,
trademark infringement and copyright infringement. That lawsuit was settled to
Align's satisfaction in 2007 by the payment of over $330,000 to Align by Dr.
Pumphrey and a stipulation by the parties that Dr. Pumphrey was decertified by
Align and is no longer authorized to treat patients with Invisalign products.

Align has reviewed the allegations contained in the ClearCorrect filing and
believes they are without merit. The Company intends to vigorously defend itself
against the Complaint.

About Align Technology, Inc.

Align Technology designs, manufactures and markets Invisalign, a proprietary
method for treating malocclusion, or the misalignment of teeth. Invisalign
corrects malocclusion using a series of clear, nearly invisible, removable
appliances that gently move teeth to a desired final position. Because it does
not rely on the use of metal or ceramic brackets and wires, Invisalign
significantly reduces the aesthetic and other limitations associated with
braces. Align Technology was founded in March 1997 and received FDA clearance to
market Invisalign in 1998. Today, the Invisalign product family includes
Invisalign, Invisalign Teen, Invisalign Assist, Invisalign Express, and Vivera
Retainers.

To learn more about Invisalign or to find an Invisalign-trained doctor in your area, please visit www.invisalign.com or call 1-800-INVISIBLE. Investor Relations Contact Press Contact Shirley Stacy Shannon Mangum Henderson Align Technology, Inc. Ethos Communication, Inc. (408) 470-1150 (678) 540-9222 sstacy@aligntech.com align@ethoscommunication.com CONTACT: Investor Relations Contact, Shirley Stacy of Align Technology, Inc., +1-408-470-1150, sstacy@aligntech.com; or Press Contact, Shannon Mangum Henderson of Ethos Communication, Inc., +1-678-540-9222, align@ethoscommunication.com, for Align Technology, Inc.