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): April 28, 2005


                            SONEX RESEARCH, INC.
              (Exact name of registrant as specified in Charter)


         Maryland                  000-14465              52-1188993
      (State or other           (Commision file         (IRS employer
      jurisdiction of               number)           identification no.)
       incorporation)


                     23 Hudson Street, Annapolis, MD 21401
                    (Address of principal executive offices)


                              (410) 266-5556
             (Registrant's telephone number, including area code)


                                    N/A
         (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 April 28, 2005, the Registrant  posted  the  following  announcement  on its
website (www.sonexresearch.com):



                   		 LAWSUIT AGAINST SONEX TO GO TO MEDIATION
 

ANNAPOLIS,  MARYLAND,  April 28, 2005 - SONEX  RESEARCH,  INC. (OTC BB: SONX), a
leader in the field of combustion technology, announced that an investor lawsuit
which the Company had sought to be dismissed is headed for mediation.

The Complaint, filed in February 2005 in the U.S. District Court for the Eastern
District of  Pennsylvania  by Bruce W. Majer of Plymouth  Meeting,  PA, Allen W.
Fortna of  Whitehall,  PA, and the Hermitage  Partnership  of  Philadelphia,  PA
(together,  referred  to as the  "Investors"),  seeks the return of  $175,000 in
equity  investments made in Sonex during 2004 plus unspecified  compensatory and
punitive damages. In late March Sonex filed a Motion to Dismiss the Complaint by
the  Investors  for failure to state a cognizable  claim as a matter of law and
for lack of jurisdiction over the Company's  current officers.  Sonex management
continues to believe  that,  aside from failing to meet the legal  requirements,
most aspects of the claims in the Complaint are without merit.

In an initial  scheduling  conference  this week,  the Court declined to issue a
scheduling order because of the pending Motion to Dismiss, and referred the case
to a magistrate  judge for early  mediation to take place  sometime after May 6,
2005.  Mediation is a conference before a judge, who will try to get the parties
to resolve the case. It is anticipated that the Court will not review the Motion
to  Dismiss  unless  the  mediation  process  does  not  lead  to a  settlement.
Accordingly,  discovery on the merits of the  allegations of the Complaint will
be deferred.


About Sonex

Sonex  Research,  Inc.,  a leader  in the  field of  combustion  technology,  is
developing its patented Sonex Combustion  System (SCS)  piston-based  technology
for in-cylinder  control of ignition and  combustion,  designed to increase fuel
mileage and reduce  emissions  of internal  combustion  engines.  Sonex plans to
complete  development,  commercialize  and  market  its  Sonex  Controlled  Auto
Ignition (SCAI)  combustion  process to the automotive  industry to improve fuel
efficiency of gasoline powered vehicles.  Additionally,  independent third-party
testing has confirmed the potential of the SCS application  for  direct-injected
diesel  engines  to  significantly   reduce  harmful  soot  in-cylinder  without
increasing  fuel  consumption.  Other  SCS  designs  are being  used to  convert
gasoline engines of various sizes to operate on safer, diesel-type "heavy fuels"
for use in military and commercial  applications requiring light weight and safe
handling and storage of fuel, such as in UAVs (unmanned aerial vehicles).


Caution Regarding Forward-Looking Statements

"Forward-looking"  statements  contained  in this  announcement,  as well as all
publicly disseminated material about the Company, are made pursuant to the "safe
harbor" provisions of the Private Securities Litigation Act. Such statements are
based  on  current  expectations,  estimates,  projections  and  assumptions  by
management  with respect to matters  such as  commercial  acceptance  of the SCS
technology, the impact of competition,  and the Company's financial condition or
results of  operations.  Readers  are  cautioned  that such  statements  are not
guarantees of future  performance and involve risks and uncertainties that could
cause  actual  results to differ  materially  from those  expressed  in any such
forward-looking statements.  Additional information regarding the risks faced by
Sonex is provided in the  Company's  periodic  filings with the  Securities  and
Exchange Commission under the heading "Risk Factors". Such filings are available
upon request from the Company or online in the EDGAR database at www.sec.gov.


SIGNATURES

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 hereunto duly authorized.


April 28, 2005

SONEX RESEARCH, INC.
Registrant



/s/ George E. Ponticas
----------------------
George E. Ponticas
Chief Financial Officer and Secretary