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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.

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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…
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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…
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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…
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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.
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Patents about software algorithms, methods implemented via computer software, and software interfaces
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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…
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Related to claims definition, interpretation, technical terms, the extent, scope, of the protection conferred to a patent
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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…
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Questions about patent laws and their implementation
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Question related to Provisional specification filing and rules thereof
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United States Patent and Trademark Office, the body which issues patents in the USA.
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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…
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a special kind of patent that covers the ornamental design, as opposed to the workings, of a functional item.
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For patent or any document filing to patent offices
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Related to Patent application, rules, formats and specific requirements.
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Related to ownership of Patent and its requirements.
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The term of a patent: the amount of time during which a patent can be enforced.
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Questions specifically relating to the patent system of the United States of America.
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Related to opposition of patent after grant.
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Questions related to The Patent Cooperation Treaty based applications.
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Questions relating to searching for or through patents and applications
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For questions relating to "novelty," as related to patents. Specifically, the bar for novelty in patents and patent applications, and interpretations thereof.
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For questions broadly relating to the licensing and legal sharing of patents. Note that questions about specific license agreements are off-topic.
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For questions relating to the requirements for filing, and effects or functions of, provisional applications
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For questions relating to the rules and standards of inventorship, as indicated and used by the United States Patent Office.
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**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.
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Question relates to Infringement of patent rights as defined in claims.
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For questions regarding the expiration date of an issued patent.
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Questions specifically relating to the EPO rules, patent practices in Europe, and patents filed in Europe
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Invalidating a patent that has already been granted
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Claims to priority based on foreign filings, parent application filings, or provisional application filings.
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For questions relating to the process of filling for or obtaining patents through the United States Patent and Trademark Office.
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For posts questioning whether any skilled practitioner would find the idea obvious in light of the prior art.
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Questions relating to design-patents and their applications.
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Questions related to interpretation and source relating to the Patent law and rules. This tag should not be used for MPEP related questions.