Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

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.

× 481
For questions relating to the legal requirements necessary for applications to be granted a patent. Please include a tag relating to the relevant type of intellectual property protection you are aski…
× 350
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…
× 334
For questions involving the creation, use, sale, import or export of patented items without permission from the patent holder or any person legally entitled to grant a license. Also for questions rega…
× 316
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.
× 242
Patents about software algorithms, methods implemented via computer software, and software interfaces
× 192
Related to claims definition, interpretation, technical terms, the extent, scope, of the protection conferred to a patent
× 168
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…
× 159
Related to procedures between the patent holder and the patent offices, opposing a patent before grant and similar questions. (The only way to do that is a Third Party Observation (TPO), so please inc…
× 118
Questions about patent laws and their implementation
× 110
Question related to Provisional specification filing and rules thereof
× 106
Questions involving patent issues across multiple countries. If your question is about a specific region or country (Eu, China, ...) please include that tag. If your question is about PCT applications…
× 97
United States Patent and Trademark Office, the body which issues patents in the USA.
× 96
For patent or any document filing to patent offices
× 96
a special kind of patent that covers the ornamental design, as opposed to the workings, of a functional item.
× 90
Related to ownership of Patent and its requirements.
× 89
Related to Patent application, rules, formats and specific requirements.
× 77
The term of a patent: the amount of time during which a patent can be enforced.
× 72
Questions specifically relating to the patent system of the United States of America.
× 69
Related to opposition of patent after grant.
× 62
Questions relating to searching for or through patents and applications
× 59
Questions related to The Patent Cooperation Treaty based applications.
× 56
For questions broadly relating to the licensing and legal sharing of patents. Note that questions about specific license agreements are off-topic.
× 54
For questions relating to the requirements for filing, and effects or functions of, provisional applications
× 53
For questions relating to "novelty," as related to patents. Specifically, the bar for novelty in patents and patent applications, and interpretations thereof.
× 50
For questions relating to the rules and standards of inventorship, as indicated and used by the United States Patent Office.
× 45
**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.
× 44
Question relates to Infringement of patent rights as defined in claims.
× 43
For questions regarding the expiration date of an issued patent.
× 38
Invalidating a patent that has already been granted
× 36
Claims to priority based on foreign filings, parent application filings, or provisional application filings.
× 36
Questions specifically relating to the EPO rules, patent practices in Europe, and patents filed in Europe
× 35
For questions relating to the process of filling for or obtaining patents through the United States Patent and Trademark Office.
× 33
Questions relating to design-patents and their applications.
× 32
For posts questioning whether any skilled practitioner would find the idea obvious in light of the prior art.
× 32
Questions related to interpretation and source relating to the Patent law and rules. This tag should not be used for MPEP related questions.