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How to check if an invention is already patented?

07-Dec-2025
Patent

Answer By law4u team

Steps to Check if an Invention is Already Patented 1. Use Online Patent Databases There are several official patent databases available that allow you to search for patents based on various criteria like keywords, inventor names, patent numbers, and filing dates. Some of the most commonly used databases include: Indian Patent Search Portal (Indian Patents Office): The Indian Patent Advanced Search System (InPASS) allows you to search Indian patents registered under the Indian Patents Act, 1970. You can search by patent number, applicant, inventor, and keywords. WIPO – Global Patent Search: The World Intellectual Property Organization (WIPO) offers a global patent search through their PATENTSCOPE database, where you can search international patents (PCT applications) and patents from various countries. USPTO (United States Patent and Trademark Office): If you're concerned about patents in the United States, the USPTO's Patent Full-Text and Image Database allows users to search for US patents and published patent applications. EPO – Espacenet: The European Patent Office (EPO) provides the Espacenet database, which contains over 100 million patent documents from around the world. This is a great resource for international patent searches. Google Patents: Google Patents is a simple and easy-to-use platform for searching patents globally. It covers patents from the USPTO, EPO, WIPO, and other patent offices. 2. Search by Keywords Start by searching for your invention using relevant keywords that describe your invention. Be specific and consider different variations of terms. You can also use synonyms, technical terms, and industry jargon to broaden the search. Try searching for common components or features that are part of your invention. Use the classification system (such as IPC Codes or CPC Codes) to narrow down the search to specific categories of inventions. 3. Search by Patent Number If you know the patent number (for example, from a reference or an earlier search), you can search directly by number in the patent office's database. This is helpful when you're cross-checking whether your invention is related to an existing patent. 4. Search by Inventor or Applicant Name If you want to check the patents filed by a particular inventor or company, you can search using their name in the database. This is useful if you suspect that someone else in your field might have patented a similar invention. 5. Use Patent Classifications Patents are classified into various categories based on the subject matter (for example, machinery, pharmaceuticals, etc.). You can search within these categories using the International Patent Classification (IPC) or Cooperative Patent Classification (CPC) codes. This will help refine your search to specific areas of technology. 6. Read the Abstract, Claims, and Description After performing your search, read through the abstract and claims of each patent. The claims section defines the scope of the patent and determines the boundaries of what is protected. Abstracts provide a summary of the invention, and the description provides detailed information on the invention's workings. 7. Check for Published Patent Applications Patents may be published before they are granted. You can check if there are any pending patent applications that might cover similar inventions. Published patent applications are available in most patent office databases. Additional Resources for Patent Search: Patent Attorneys and Agents: If the search process feels overwhelming, you can consult a patent attorney or patent agent. They are trained to conduct comprehensive patent searches and can provide legal advice on whether your invention is patentable or if it infringes on existing patents. Patent Search Services: Several online services offer patent search for a fee, where experts search and analyze patent databases for you. They might provide more in-depth analysis, including competitive intelligence and freedom-to-operate opinions. Things to Keep in Mind During Patent Search: 1. No Search is Perfect: Even though patent databases are vast, they may not always be fully comprehensive or up-to-date. This is why a professional patent search is sometimes recommended, especially if you are planning to file a patent for a commercially important invention. 2. Global Search: If your invention could be relevant in multiple jurisdictions (e.g., you plan to patent it in several countries), you should perform a global search through databases to check for existing patents in different regions. 3. Patent Search Limitations: Some patents may be expired, abandoned, or not in force, and thus no longer relevant. However, patents that are still in force may restrict your ability to use similar inventions without permission. 4. Novelty and Patentability: A patent search can help determine novelty, but patentability also depends on factors like non-obviousness and industrial applicability. An invention that is new may still not be patentable if it doesn’t meet all patenting requirements. Conclusion A patent search is an essential step before filing a patent application. By searching patent databases, you can identify if your invention is novel or if it has already been patented. Using official patent office websites and international databases, you can conduct an effective patent search to see if your invention is free to be patented. If you're unsure or require a thorough analysis, consulting with a patent attorney can help ensure that your invention is truly unique and patentable.

Answer By Anik

Dear client, To check if an invention is patented, a complete prior art search should be conducted. That is a patent search should be conducted to understand if the invention is patented or not. Patent search in simple words is a complete search that is conducted to identify existing patents and published patent applications that are relevant to a new invention or idea. It is a fundamental step in the patent application process and is aimed at determining the novelty and non-obviousness of an invention before filing a patent application. Online Patent Databases Through the use of online patent databases, it is possible to find out whether the invention is already patented or not. Some of the most commonly used databases include: 1. InPASS- This is website for Indian patent advanced search. it allows to search for all the patents that are granted under the Indian Patents Act, 1970. Search could be made by patent number, keyword search etc. 2. USPTO (United States Patent and Trademark Office) - This Patent Public Search allows the search with regard to the patents being granted in US. 3. EPO (Espacenet)- The European Patent Office provides the Espacenet database and this contains more than 100 million patent documents from around the world. 4. WIPO: The World Intellectual Property Organization offers a global patent search through their PATENTSCOPE database. This is useful for international patents as well. How to Conduct a Patent Search 1. Keyword Search: The primary way of doing a patent search is by conducting a basic keyword search. The keywords should basically describe the invention. By the Classification system, the search could be further narrowed down. 2. Patent number search: If the patent number or application number is already known then the specific search could be conducted in that way. 3. Inventor/ Applicant's name Search: the specific name of the inventor or applicant is known then the search could be done by using the specific credentials and that helps to narrow down the search and will bring clarity if the invention is patented or not. The Service of Patent Attorney/ Agent: The services of the patent attorney/ agent will allow for a comprehensive search and provide a patentability opinion by use of better tools and expertise. By either conducting a patent search or by utilising the services of a patent attorney/ agent, it could be ascertained that an invention is patented or not. I hope this answer was helpful. For any further queries please do not hesitate to contact us.

Answer By Ayantika Mondal

Dear client, To determine whether an invention is already patented or not, a proper patent search needs to be done using recognised patent databases. A patent search allows to verify if that invention is already being patented or not or whether such invention is previously disclosed or granted protection, which is essential before filing a new patent application. The search may be carried out through official platforms such as, InPASS (Indian Patent Advanced Search System), for Indian patents, and international databases like WIPO'S PATENTSCOPE, and the USPTO database for foreign filings. By entering relevant keywords, technical features, applicant names, or classification codes, one can verify existing patents, pending applications, and published prior art. This process helps assess the novelty, and patentability of the invention and prevents infringement risks. Therefore, for accuracy and completeness such patent searches are ideally conducted by professional experienced in patent analytics, or by registered patent attorney. I hope this answer was helpful. For further queries, please do not hesitate to contact us. Thank you.

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