The original patent expiration date for Patent Number 5,565,473 (SINGULAIR- montelukast sodium by Merck) was 30-Nov-2010 but it was extended 430 days to 03-Feb-2012. Generic forms may be expected soon after that. If you have 90 day prescriptions do not renew it after November 2011. Only do 30 day renewals until discovering if generic forms appear in February 2012.
2014 - that was the original year, but it was extended in 2009 for another 4 years to 2018 for the Spiriva HandiHaler
Several Symbicort patents already expired in 2011.
August 2012 at the earliest.
When does the patent expire for abilify
2020
2019
May 2014.
April 2017.
2020
November 2021.
The patent expires in 2017. You don't have all that long to wait.
2018 in the U.S.
Yes. There is a final date on which patent rights eventually do expire, but you will have to do your own research on the patent in question.
Supposedly it expired decades ago...
Jun 11, 2013Lilly will also lose patent coverage for Humalog and Gemzar in 2013.