Here is an exerp from the DNR web site.
All it says is that, all atv's and off road vehicles are to be REGISTERED....not licensed, with the DNR, for private use.
It also is stated that it does not expire for the time that the owner use's it on his private property, only when transfered to another party.
OHMs
All OHMs operated in Minnesota must be registered with DNR, even if
used exclusively on private property or in track racing events.
OHM Recreational and Highway Use Registration
Some OHMs are equipped so that they may be legally licensed for
highway use. An OHM licensed for highway use that is also used offroad
must have both the regular motorcycle license and the DNR OHM
registration.
ORVs
All ORVs operated on DNR designated or grant-in-aid ORV trails or
areas must be registered with DNR.
ORV Recreational and Highway Use Registration
Many ORVs are licensed for highway use. An ORV licensed for highway
use that is also operated on designated public ORV use areas or trails
must have both the regular vehicle license and DNR ORV registration.
How To Register An Off-highway Vehicle
• Off-highway vehicles can be registered at a deputy registrar of motor
vehicles office (where automobile license tabs are purchased) or at the
DNR License Center in St. Paul. You may renew your OHV registration
on-line at
www.mndnr.gov. No additional fee will be charged.
• The information required for registration of an off-highway vehicle
includes the make, model, year, serial number, and sales receipt. For ATV
and OHM registration the engine size is required. For ATV registration
the dry weight is also required.
• ATVs and OHMs purchased from a retail dealer must be registered
at the dealer by the owner. The dealer will issue a temporary 21-day
registration.
• A registration card and an expiration decal are issued when an ATV or
OHM is registered.
• Owners of ORVs licensed for roadway use must register their ORVs
with the DNR for use on designated trails and areas. The owner is given
a registration card and decal at the time of registration.
• If you sell your OHV give the new owner the registration card and a
bill of sale.
• Any transfers and registration renewals are the responsibility of
the owner.
Display of Numbers and Decals
ATV
ATVs registered for public or dual use must display the current public use
registration number and decal(s) on a plate at least 4 inches high and 7½
inches long. The plate must be clearly visible on the back of the vehicle and at
least 12 inches from the ground. The plate and decal must be maintained in a
clear and legible condition.
Registration letters and numbers must be:
• at least 1½ inches high with a 3/16-inch stroke
• in English and placed from left to right
• in a color that contrasts with the background of the plate.
For a public use registration, the decal must be displayed in the
upper left section of the plate.
For private use only registration, the decal must be displayed in
the upper right section of the plate. No numbers are needed for
this type of registration.
For a dual registration, the public use decal and private use
decal must be displayed in the appropriate section of the plate.
OHM
OHMs registered only for off-road use must display the current registration
decal on the side of the OHM so it is visible while the rider is on the OHM.
It may be attached to the fork tube.
When an OHM is operated on private property, or in a closed-course
competition event, registration is required but the registration decal does not
have to be displayed.
OHMs licensed in Minnesota for roadway use and
registered for off-road use, must display the OHM
decal in the upper left corner of the rear regular
motorcycle license plate. The DNR registration
number should not be displayed.
Expiration and Renewal
The expiration date appears on both the registration card and the decal. All
public use ATV and all OHM and ORV renewals expire on December 31st of
the last year the registration is valid.
Individuals who notify the DNR of mailing address changes should receive a
notice by mail to renew their registration. Whether notified or not, owners are
responsible for renewing their public use ATV, OHM, and ORV registrations.
Private use ATV registration does not expire. It is valid until the ownership
is transferred.Replacement Registration Cards and Decals
Off-highway vehicle owners may obtain a replacement registration card for
$10.00 or a replacement decal for $6.00 from the DNR License Center or the
Deputy Registrar of Motor Vehicles. Replacement decals and numbers must be
affixed in the same manner as the original.
Individuals are not required to carry the registration card, but when an
enforcement officer requests to see it, it must be provided within a reasonable
time period.