Number of characters to duplicate content

[imoveiscamposdojordao]

I wonder how much characters in a page title so it can be characterized for Googleas duplicate content?
Sorry for the English, I used Google Translator. 
I'm from Brazil
Thanks.

[SEODinosaur]

Less then 70 characters is best

http://www.seomoz.org/learn-seo/title-tag

Not sure what you mean by duplicate content. Every title should be unique and then you will not have to worry about duplicate titles.

Duplicare content means that Google has indexed content more than one time. Google does not like duplicate content on a page.

Google will look at the first content as the original and index it as the original. Anything after that is duplicate content. If you want to use someone else's content be sure to link back to the original article.

[NakulGoyal]

The way I have seen duplicate page titles reported is "Exact duplicates" So if you have 2 pages with Page Title as "Widgets", they will show up as Duplicate. However, if one of them was a Blue Widgets and the other was Red Widgets, they will not show up as duplicate. It's a good idea to work on Duplicate Page Titles, but don't do all the work to make sure Google does not see them as Duplicate any more. Look at them as opportunities to display the correct, relevant information in the SERPS so that user's click through to your website. I hope that helps.

[mytouchoftech]

As stated, the titles have to be exactly the same.  1 character different and they're not duplicate.  Although 70 characters is what Google displays in the searches, they index more than that.  You can make your title 140 characters long to make it unique, it just will cut off in the search.

[CountryAttire]

I have been wrestling with this issue for some time. As far as we have been made aware, if a Page Title exceeds 70 charactes not only will this text not appear in the Search Results, but Google will also not index text after this limit.. But Andrew do you believe this too not be the case, and in fact having perhaps longer Page Titles with Long-Tail Keyword targeting is a good way to improve ranking?

This article seems to agree with this as well:

http://searchenginewatch.com/article/2166510/4-SEO-Recommendations-to-Target-the-Long-Tail

We had begun to reduce Page Title Character lengths across site but we are in 2 minds whether to do so now!