Which of the following describes a Provisional Application?

The definition of a Provisional Application is accurately captured by the choice regarding it being claimless and temporary with no amendments allowed. A Provisional Application serves as a preliminary step in the patent process, allowing inventors to establish an early filing date without the necessity of formal patent claims. It is important to note that this type of application does not undergo examination and does not become a granted patent; thus, it is indeed temporary in nature.

The lack of claims is significant because it allows inventors to secure their invention's priority without detailing claims as required in a non-provisional (utility or design) patent application. Furthermore, once a Provisional Application is filed, it cannot be amended – any changes would require filing a new application.

The other options provide incomplete or inaccurate statements regarding the Provisional Application. For instance, saying that it is a complete application ready for examination mischaracterizes its purpose and nature. Also, suggesting that it is unattainable following a utility application is misleading since you can file a Provisional Application before or alongside a utility application. Lastly, claiming priority from an existing application is generally not correct in the context of Provisional Applications, as their primary purpose is to establish their own early filing date, rather than claiming priority from