If you’ve changed trademark lawyers within the 15-year period since the date of your confirmation of trademark registration in Canada, you will need to have your new trademark lawyer contact the CIPO to be added as your new representative for service.
http://trademarkshop.ca/how-long-does-trademark-registration-canada-last/
Note: you can also transfer ownership of your trademark registration in Canada instead of renewing it under your own name. Trademark transfers are provided for under section 48(1) of the Trademark’s Act Canada. In order to effect a trademark transfer, you will need to file a Canadian trademark transfer application with the CIPO.
http://trademarkshop.ca/how-long-does-trademark-registration-canada-last/
1 and an application for renewal under Section 9 of the Trademark Act (also known as a Section 9 Renewal) In addition, the owner of a registration on the Principal Register may file a Declaration of Incontestability under Section 15 (Section 15 Declaration) of the Trademark Act.
http://inventors.about.com/od/inventing101trademarks/f/expiration.htm
This means that you will need to renew your trademark registration in Canada 15 years after the date it was registered by the CIPO. You can check the CIPO database if you’re unsure of the exact date your Canadian trademark was registered.
http://trademarkshop.ca/how-long-does-trademark-registration-canada-last/
You must also file an affidavit and pay a fee within a year before the end of every ten-year period. If an affidavit is missed, the registration is canceled. However, you may file the affidavit within a grace period of six months after the end of the sixth or tenth year, with payment of an additional fee.
http://inventors.about.com/od/inventing101trademarks/f/expiration.htm
Clients often ask us, “Once my application to register a trademark in Canada is allowed, how long does trademark registration last?” Well, by virtue of the Trademark’s Act Canada, a trademark registration (Canada only) is valid for 15 years from the date of registration or the date of last renewal.
http://trademarkshop.ca/how-long-does-trademark-registration-canada-last/
The Section 8 Declaration. The technical answer to the question of how long your trademark lasts is six years. After six years the USPTO can cancel your trademark if you haven’t filed the appropriate paperwork. Between the fifth and sixth anniversaries of your trademark registration date, you are required to file a Section 8 Declaration.
https://secureyourtrademark.com/blog/how-long-does-a-trademark-last/
Answer: Unlike copyrights or patents, trademark registration rights can last indefinitely if the owner continues to use the mark to identify goods or services. The term of a federal trademark registration is ten years, with ten-year renewal terms. However, between the fifth and sixth year after the date of initial trademark registration, you must file an affidavit of use and pay an additional fee to keep the registration alive.
http://inventors.about.com/od/inventing101trademarks/f/expiration.htm
For example, if your trademark was registered on July 1, 2008, then you would have to file the Section 8 Declaration sometime on or after July 1, 2013 and on or before July 1, 2014.
https://secureyourtrademark.com/blog/how-long-does-a-trademark-last/
Federal trademark registration lists your trademark in the USPTO's online databases and allows you to use the ® symbol, which essentially notifies the public that you own the trademark. Trademark registration also allows the trademark owner to bring action against infringers in federal court. In just a few simple steps, LegalZoom can help you create and file a trademark application with the USPTO. Start protecting your brand by applying to register a trademark through LegalZoom today. Apply for Trademark Registration through LegalZoom. * Available in most states.
https://www.legalzoom.com/trademarks/trademarks-overview.html
how long does a trademark last
A trademark last upto ten years. A trademark lasts for ten years.