<PAGE>
 
                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C. 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)    March 1, 2001
                                                --------------------------------
 
                            ALIGN TECHNOLOGY, INC.
--------------------------------------------------------------------------------
            (Exact name of registrant as specified in its charter)

          Delaware                     0-32259                 94-3267295
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(State or other jurisdiction         (Commission               (IRS Employer
    of incorporation)                File Number)           Identification No.)


             851 Martin Avenue, Santa Clara, California             95050
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              (Address of principal executive offices)            (Zip Code)


Registrant's telephone number, including area code     (408) 470-1000
                                                  -----------------------------
                                Not applicable
-------------------------------------------------------------------------------
         (Former name or former address, if changed since last report)



ITEM 5.   OTHER EVENTS

          On March 1, 2001, Align Technology, Inc. announced it had been named
in a class action lawsuit.  A copy of the press release issued by Align
Technology, Inc. on March 1, 2001 concerning the lawsuit is filed herewith as
Exhibit 99.1 and is incorporated herein by reference.



ITEM 7.   FINANCIAL STATEMENTS AND EXHIBITS

          (a) Not applicable.

          (b) Not applicable.

          (c) Exhibits     The following documents are filed as exhibits to this
              report:


               Exhibit
               Number          Description
            -------------   -----------------
                99.1        Press Release dated March 1, 2001 of the Registrant.

<PAGE>
 

                                   SIGNATURES

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


                                              ALIGN TECHNOLOGY, INC.
                                              a Delaware corporation
 

             March 2, 2001                    By:  /s/ Zia Chishti
                                                 ------------------------------
                                                 Zia Chishti
                                                 Chief Executive Officer and 
                                                 Chairman of the Board
 
                                              By:  /s/ Stephen Bonelli
                                                 -------------------------------
                                                  Stephen Bonelli
                                                  Chief Financial Officer and 
                                                  Vice President, Finance
 



                                 EXHIBIT INDEX



              NUMBER            DESCRIPTION
           --------------   -----------------
               99.1         Press Release dated March 1, 2001 of the Registrant.



                                       2





<PAGE>
 
                                                                    Exhibit 99.1


Align Technology, Inc.:                        Fenton Communications:
-----------------------                        --------------------- 

Stephen J. Bonelli                             Marci Greenberg
(408) 470-1165                                 (212) 584-5027
sbonelli@aligntech.com                         mgreenberg@fenton.com
----------------------                                 

Thomson Financial Carson:                       
-------------------------         
Mary Magnani                                   Shannon Henderson   
(415) 617-2542                                 (678) 417-1767          
mary.magnani@tfn.com                           shannon@ethospr.com 
                                                
                                               



Align Technology Named in Class Action Lawsuit; Company Believes Complaint Is
Without Merit

SANTA CLARA, Calif., March 1 --

Align Technology, Inc. (Nasdaq: ALGN), the inventor of the Invisalign(R) System,
a proprietary method of straightening teeth without unsightly wires and
brackets, today announced that a complaint was filed against the company on
February 22, 2001 by Jon L. Richter in the United States District Court for the
Eastern District of Pennsylvania. Richter, a general practice dentist, purports
to sue on behalf of himself and all licensed dentists in the U.S., excluding
orthodontists. Mr. Richter alleges that Align Technology reached an agreement
with unspecified orthodontists to restrict the sales of the Invisalign System
only to orthodontists, and thereby violated U.S. antitrust laws. The complaint
seeks injunctive relief and damages. While the Invisalign System is not
available to dentists, Align Technology
 has not entered into any agreements with
orthodontists restricting the distribution of the Invisalign System. For this
reason, among others, Align Technology believes the lawsuit is without merit.

Since launching the Invisalign System in July of 1999, Align Technology's policy
has been to sell the System solely to orthodontists. Orthodontists are dental
specialists who receive two to three years of training beyond general dentistry
in treating malocclusion, or the misalignment of teeth.

About Align Technology, Inc.

Align Technology designs, manufactures and markets the Invisalign System, a
proprietary new method for treating malocclusion, or the misalignment of teeth.
The Invisalign System 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, the Invisalign System significantly reduces the aesthetic and other
limitations associated with braces. Invisalign is appropriate for treating
adults and older teens. Align Technology was founded in March 1997 and received
FDA clearance to market the Invisalign System in 1998.

<PAGE>
 
This release may contain forward-looking statements based on Align Technology's
current expectations with respect to the merit of the pending lawsuit. These
forward-looking statements involve risks and uncertainties, including the scope
of the plaintiff's claims, the merit of the plaintiff's claims, the outcome of
litigation, any financial impact resulting from litigation and Align
Technology's ability to successfully conclude the litigation. Other factors that
could materially impact Align Technology are discussed in more detail in Align
Technology's registration statement on Form S-1, as well as other reports and
documents filed from time to time with the Securities and Exchange Commission.




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