When Does Cialis Patent Expire?

Answer

Cialis' patents are set to expire between 2017 and 2020. Viagra's patent was originally scheduled to expire in late March of 2012 but was extended to April 2020. Therefore, generic versions of these medications will be several years away.
Reference:
Q&A Related to "When Does Cialis Patent Expire?"
2019.
http://wiki.answers.com/Q/When_does_patent_expire_...
A US patent used to expire after 17 years from its date of issue. In recent years the length of time has changed to 20 years. It also depends on the type of patent.
http://answers.ask.com/Health/Other/when_do_patent...
The U.K. Government’s Intellectual Property Office reports the history of patents cannot be traced back to any single country. The U.K.’s patent law is the longest continuous
http://www.ehow.com/about_6707514_do-patents-expir...
Monsanto and other tech companies continue to invest in the development of new technologies that will benefit farmers showing the U.S. patent system provides incentive for innovation
http://www.quora.com/Monsanto/What-will-happen-to-...
Explore this Topic
The United States government supports three different kinds of patents: plant, utility, and manufactured. Each of these patents comes with different durations ...
Lipitor's patent is due to expire in 2010. ...
The patent expiration date for Lipitor was March of 2010. There were no generic versions of the drug released until November 30, 2011 due to a deal Lipitor makers ...
About -  Privacy -  AskEraser  -  Careers -  Ask Blog -  Mobile -  Help -  Feedback © 2014 Ask.com