tag:blogger.com,1999:blog-19210793.post8587971369490603952..comments2023-05-23T04:41:58.939-04:00Comments on IPEG: How justified are differences in IP duration?Unknownnoreply@blogger.comBlogger1125tag:blogger.com,1999:blog-19210793.post-44152326483649095102008-03-27T15:12:00.000-04:002008-03-27T15:12:00.000-04:00I think that the difference is due to the type of ...I think that the difference is due to the type of protection that each affords. With a patent, you are protecting the substance; no one can use what you claim, period, without your permission. With copyright, you are not protecting the substance so to speak, you are protecting the expression of it. Anyone can read a book and then use that knowledge, even repeat that knowledge in their own works (giving proper credit of course) but they cannot literally "copy" the page from the book without permission. I think that is one reason why copyright endures for a longer period: the scope of protection is really alot less, being only the expression of the material.Anonymousnoreply@blogger.com