A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.

Type to find tags:
× 351
For questions relating to the legal requirements necessary for applications to be granted a patent.
× 327
Help kill bad patent applications by providing evidence of prior art. Making a difference is as simple as using Google to find literature relevant to a pending application. Follow @AskPatents for a f…
× 255
For questions relating to the USPTO rules related to prior art or what constitute prior art. For REQUESTS FOR PRIOR ART please use the [prior-art-request] tag.
× 239
For questions involving the creation, use, or sale of patented item without permission from the patent holder.
× 202
Patents about software algorithms, methods implemented via computer software, and software interfaces
× 161
Related to opposition of patent before grant.
× 135
Related to claims definition, interpretation, technical terms, the extent, scope, of the protection conferred to a patent
× 103
Questions about patent laws and their implementation
× 86
Questions involving patent issues across multiple countries.
× 86
For questions relating to the preliminary steps of a patent, wherein an inventor or attorney files a draft of the patent either for review by a patent examiner, or in the case of provisional applicati…
× 77
For patent or any document filing to patent offices
× 68
Related to ownership of Patent and its requirements.
× 65
Related to Patent application, rules, formats and specific requirements.
× 64
United States Patent and Trademark Office, the body which issues patents in the USA.
× 62
The term of a patent: the amount of time during which a patent can be enforced.
× 60
Related to opposition of patent after grant.
× 60
a special kind of patent that covers the ornamental design, as opposed to the workings, of a functional item.
× 47
Questions relating to searching for or through patents and applications
× 46
Question related to Provisional specification filing and rules thereof
× 46
For questions broadly relating to the licensing and legal sharing of patents. Note that questions about specific license agreements are off-topic.
× 41
**PLEASE NOTE** that questions about Copyright are off topic for this site. Use this tag for questions predominantly about patents that cross over into Copyright issues.
× 41
Questions specifically relating to the patent system of the United States of America.
× 40
For questions relating to the rules and standards of inventorship, as indicated and used by the United States Patent Office.
× 36
× 36
For questions regarding the expiration date of an issued patent.
× 30
Related to patents filed, licensed or prosecuted by Applicant APPLE INC.
× 30
For questions relating to "novelty," as related to patents. Specifically, the bar for novelty in patents and patent applications, and interpretations thereof.
× 29
Invalidating a patent that has already been granted
× 27
For questions relating to the process of filling for or obtaining patents through the United States Patent and Trademark Office.
× 26
For questions involving an individual filing on their own behalf.
× 26
For questions involving expired patents.
× 25
is used on patent applications and patents which have been successfully narrowed or rejected by the USPTO after having been the subject of a prior-art-request on Ask Patents.
× 25
Questions related to The Patent Cooperation Treaty based applications.
× 24
For questions relating to the requirements for filing, and effects or functions of, provisional applications
× 23
a mark that can be included in the description of a product to indicate that some aspects of that product is covered by a patent application that has been filed, but not yet abando…
× 23
Question relates to Infringement of patent rights as defined in claims.