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Prove that the invention was on sale or available for public use—A patent can be invalidated if, within the 12 months prior to the filing of the patent application, the invention was on sale or available to the public in the United States, patented in another country, discussed in a publication, or recognized by other ...

Unfortunately, under United States patent law you can not amend the patent to include the new subject matter reflecting the improvement you made to the invention. You will have to file a new patent application for the improvement to the invention instead of filing an amendment to the patent.

Under certain circumstances, yes. An abandoned patent application may be revived depending upon the following key factors: reason for abandonment; and. length of time it took for the applicant to seek revival.

Technically, U.S. Provisional Patent Applications cannot be amended for any reason. However, realistically, you can file as many provisional applications as you want within a year of your original filing. We just add your improvements into the document of your original provisional and file it as a second provisional.

In general, amendments to patents and applications are governed by Sections 57 and 59 of the Act, which stipulate that such amendments can be made only by way of disclaimer, correction or explanation without addition of new subject matter.

Consequently, the filing of a provisional application delays the patent examination process. Provisional applications may not support the broadest claims for an invention. As a result, later-filed claims in the utility application may not be entitled to the priority date of the original.

You can change the claims of a patent without filing a new application unless you are making a new claim. If you are making a new claim, you will need to file a new patent application. Federal regulations governing the USPTO provide specific rules for amending patent claims.

While you generally cannot change the description in an existing patent application, you can file a certain continuing application to add new matter or make changes. Such an application is called a continuation-in-part, or simply CIP.

Amendments to a claim must be made by rewriting the entire claim with all changes (e.g., additions and deletions) as indicated in this subsection, except when the claim is being canceled.