United States Securities and Exchange Commission

                          Washington, D.C. 20549


                                FORM 12b-25


                        NOTIFICATION OF LATE FILING


(check one)


___  Form 10-K

___  Form 20-F

___  Form 11-K

_ X _  Form 10-Q

___  Form N-SAR


For Period Ended :   May 31, 2009


___  Transition Report on Form 10-K

___  Transition Report on Form 20-F

___  Transition Report on Form 11-K

___  Transition Report on Form 10-Q

___  Transition Report on Form N-SAR


For the Transition Period Ended: _____________________________________


**********************************************************************


PART 1 - REGISTRANT INFORMATION


Full Name of Registrant:                 Viropro, Inc.


Address of Principal Executive Office:   300, Avenue des Sommets, Suite 1806


City, State and Zip Code:                Verdun, Quebec, Canada H3E 2B7



PART II - RULES 12B-25(b) AND (c)


If the subject report could not be filed without unreasonable effort or

expense and the registrant seeks relief pursuant to rule 12b-25(b){section

23,047], the following should be completed. (Check box if appropriate)


           (a)  The reasons described in reasonable detail in Part III of

                this form could not be eliminated without unreasonable

                effort or expense;

_ X _        (b)  The subject annual report, semi-annual report, transition

                report, on Form 10-K, 10-KSB, Form 20-F, 11-K, Form N-SAR,

                or portion thereof will be filed on or before the fifteenth

                calendar day following the prescribed due date; or the

                subject quarterly report on Form 10-Q, 10-QSB, or portion

                there of will be filed on or before the fifth calendar day

                following the prescribed due day; and

           (c)  The accountant's statement or other exhibit required by

                Rule 12b-25(c) has been attached if applicable.





PART III - NARRATIVE


State below in reasonable detail why the Form 10-K, 11-K, 10-Q, N-SAR, or

the transition report or portion thereof, could not be filed within the

prescribed time period.


The Registrant has recently changed auditors, thus was not able to

complete the unaudited financial statements without unreasonable effort

and expense and therefore its Quarterly Report on Form 10-Q cannot be

filed within the prescribed time period.


The Registrant anticipates filing within the extended filing period,

pursuant to Rule 12b-25.



PART IV - OTHER INFORMATION


(1)  Name and telephone number of person to contact in regard to this

     notification.


   Claude Gingras              514                  465-2722          

     (Name)                  (Area Code)         (Telephone Number)


(2)  Have all other periodic reports required under Section 13 or 15(d)

     of the Securities Exchange Act of 1934 or Section 30 of the Investment

     Company Act of 1940 during the preceding 12 months (or for such

     shorter period that the registrant was required to file such reports)

     been filed?  If the answer is no, identify report(s).


                                                            _ X _ Yes  ___ No


(3)  Is it anticipated that any significant change in results of

operations from the corresponding period for the last fiscal year will be

reflected by the earnings statements to be included in the subject report

or portion thereof?


                                                          ___ Yes   _ X _ No


If so, attach an explanation of the anticipated change, both narratively

and quantitatively, and, if appropriate, state the reasons why a

reasonable estimate of the results cannot be made.



************************************************************************

                                 SIGNATURE

************************************************************************


VIROPRO, INC.


has caused this notification to be signed on its behalf by the

undersigned hereunto duly authorized.



By: /s/ Claude Gingras                     Date:  July 15, 2009

_____________________________________    ______________________________

Title: Vice-president Corporate Affairs






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