Questions tagged [continuation]

This tag should be applied to questions involving continuation patent applications or patents granted from continuation applications.

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11
votes
4answers
10k views

What is a continuation patent?

I understand that a continuation patent builds upon an existing patent (or application) by the same inventor. However, I find some aspects to be murky and prone to misuse. Specific questions follow: ...
4
votes
2answers
177 views

Fixing a poorly written patent application that has not been published

I have a patent application that was poorly written. There have been no office actions on the merits and the application has not published. I want to basically rewrite the app, or at least change it ...
2
votes
1answer
2k views

Do divisional, continuation, and continuation-in-part affect expiration dates for patents filed prior to June 8, 1995?

As noted in an answer regarding the expiration of US 5,618,582, the effective expiration date of the patent was calculated as: The patent application was filed on June 7, 1995 and issued on April ...
1
vote
2answers
1k views

Parent patent expired due to non-payment - are issued continuations still valid?

US patent 5938197 shows that it is expired due to non-payment (according to the search here: http://portal.uspto.gov/pair/PublicPair ). This patent has several children/continuations. Does the fact ...
0
votes
1answer
122 views

Chaining unrelated inventions

I asked this question and it seems there divisional applications can have the same detailed description. I know that before the patent is issued, I can file another application claim priority date of ...