Free Patent Search Sites

If you’re looking for a free patent search site that can help you to find and use any of the many patents out there for your own projects, then you’ve come to the right place. There are several different sites that can offer you the information that you need, and if you take the time to find the right one, you’ll be well on your way to being able to make your dream project a reality.


Free patent search websites are a good resource for obtaining quick leads. They provide standard patent information and translations in many languages. You can also perform country-specific searches.

When searching for a patent, the patent database is one of the best places to start. The patent database allows you to search for patents by identifying the type of invention and its patent number. This is a great resource for finding older patents that may be related to your invention.

You can also find similar patents through other sources, such as searching cited references and classification codes. If you are able to do these searches, you will be able to narrow down your search and identify patents that are relevant to your invention.

One of the most important things to remember is that searching for a similar patent is not as simple as it sounds. In fact, it can take a lot of time. Depending on the size of the patent database, it can take days to a week to get an answer. It is a good idea to establish a sense of professional status and familiarity with the patent database before attempting a similar patent search.

To avoid spelling mistakes in the database, it is a good idea to use a built-in spell check in your web browser. Spelling mistakes will inevitably creep into the database, but you can help prevent them by ensuring that you clearly describe the product in your application. After all, you need to know if the product in your application is similar to any other product on the market.

Google Patents is the best free patent search engine. It includes patents from more than 18 million documents. The website is easy to use. However, it may miss recent publications.

free patent search

Google Patents is one of the best free patent search tools on the market. It is also one of the easiest and fastest ways to conduct a patent search.

Basically, Google Patents is a collection of patents that are indexed by Google, along with books and journals indexed by Google Scholar. However, it is not as comprehensive as some paid databases. Moreover, the database is not updated regularly. As a result, you may be missing on some important patent documents.

Despite its limitations, Google Patents has helped many scientists and inventors in getting the patent information they need. It is also useful for companies managing their corporate intellectual property. The site also allows users to download the patents in PDF format.

Google Patents indexes more than 120 million patent publications. This includes patents from twelve different countries. Also, it includes patents from the World Intellectual Property Organization (WIPO). For this reason, it is a good tool for searching international patents.

One feature that can be found in other free patent databases is a “More Like This” button that helps you nudge the AI. You can use this to highlight relevant items. Similarly, you can use the ctrl+f function to open a link in a new window.

Other features include the ability to filter by country, language, publication date, and priority. Users can also perform an advanced search. In addition, the site offers a summary of the claims on a given patent.

The interface is reminiscent of a traditional Google search page. You can view patents from specific jurisdictions, search by keyword, and save a search. Another cool feature is the Google Prior Art Archive

For more detailed patent searching, you can check out Espacenet. This database offers 140 million patent documents from around the world. In addition, it includes machine translation of text.

Espacenet’s user interface isn’t as impressive as that of its competitors. However, it does have some features you won’t find on other sites.

In particular, it provides a search by IP address. The site’s advanced search feature allows you to search by publication number, publication date, and application number.

In addition, Google Patents has a built-in search function, which can be especially useful if you’re trying to find a specific reference. It also combines visualizations and citations, so you can do a deeper lookup than you would on other sites.

Other free patent search sites include Lens, a patent search tool offered by Cambia, a non-profit organization in Australia. It features video tutorials and an excellent machine translation system.

Another option is the PATENTSCOPE database, a World Intellectual Property Organization (WIPO) administered database. It includes all PCT applications, as well as patent papers registered by cooperating regional patent administrations.


Design View is the free online database of designs from the European Union Intellectual Property Office (EUIPO) and 72 participating national offices around the world. Its interface is user friendly and the search is free of charge. The site is also available in 37 languages.

One of the more intriguing features of the site is its ability to provide a plethora of data relating to patents, trademarks, and designs. As of the writing of this article, the database had 16,941,630 registered designs. This equates to over a tenth of the total number of registered applications. To boot, it also contains the aforementioned acronyms, names, and numbers. For a nominal fee, a more comprehensive and comprehensive search can be arranged. Aside from the standard search, you can also perform a search using an advanced search wizard.

The best part of all is that the database is easily accessed from anywhere in the world. So, if you have a bit of spare time and an internet connection, the site may be a worthy addition to your bookmarks list. If you are based in the US, you can get your design a-game on at your local USPTO library.

Design View was a worthy contender in the search for the best and most accurate design patent database on the planet. However, with the growing number of jurisdictions vying for patent supremacy, it’s hard to know which is the best and which is the most reliable.


PatentScope is the World Intellectual Property Organization’s free patent search database. It offers access to 83+ million patent documents. The database contains PCT applications from all participating countries.

Users can download up to 10,000 records at a time. A premium service is available for users who want to get more detailed information and analyses. Premium services include watermark-free patent images and custom export with PowerPoint templates.

PatentScope has an easy to use interface. You can browse by week filed, search by keyword, and select supervised expansion. Detailed video tutorials are also provided.

The free patent search database is available in nine languages. In addition, it provides a mobile interface.

For advanced searches, users can choose to expand their search by combining terms in field combinations or using proximity operators. There is also a cross-lingual feature, which allows for identification of similar search terms in multiple languages.

PatentScope is a very powerful tool. It includes patent applications from the USPTO, EPO, Japan, and other international offices. It offers a range of searches to help you find the patents that best suit your research.

Another good thing about the database is the extensive coverage. It covers all major patent-filing countries. This means that you can find patents from China, Europe, and the United States.

The interface is easy to navigate, and it is available in Spanish, Chinese, Arabic, French, Japanese, German, Italian, and Russian.

WIPO Translate

WIPO Translate is an artificial intelligence-based translation tool for patent documents. It uses neural machine translation technology and is designed to translate highly technical patent documents.

A recent test found that it performed better than other web-based and paid patent translation tools. According to WIPO Director General Francis Gurry, this is because the translation process is more powerful than other methods.

This new system could help push the world’s research and patent systems forward. The tool could also be useful for inventors, entrepreneurs and other researchers.

WIPO Translate translates patent texts into a second language instantly. It is available through WIPO’s PATENTSCOPE database. It can handle English, Chinese and Korean.

In addition, the software can be customized to other languages, including French, German and Spanish. You can choose to translate one paragraph at a time or select the entire document. Using the tool, you can also search official emblems and other symbols from the International Patent Classification.

WIPO has partnered with academic AI experts from Edinburgh and Montreal universities to develop the technology. It has also trained the tool on 60 million sentences supplied by the Chinese State Intellectual Property Office.

The tool is currently available in a beta version for translations between Chinese and English. However, WIPO hopes to expand its neural machine translation service to other language pairs in the future.

The program is also designed to be accessible to everyone. Its specialized NMT software allows people to easily download and use it on their computers.

As for the technology, it uses a large neural network model to produce highly accurate translations. Neural machine translation is especially effective for distant language pairs.

Google Patents

Google Patents is a free patent search engine that provides users with the ability to find patents. Using this tool, you can perform a variety of searches, from a general search to a keyword search to one involving the non-patent literature. It is not only easy to use, but also fast.

There are many patent databases out there. Some provide only limited results, while others offer a multitude of features. These include highlighting text and using AI to do some of the heavy lifting. For example, the Lens database provides both an extensive history and an intelligently designed user interface.

Although there are numerous free patent databases, only a few of them have a comprehensive novelty search. If you’re looking to make a solid, comprehensive patent search, you may want to consider going with a paid option.

In addition to a comprehensive search, Google also provides a handy feature allowing users to view images of patents in PDF format. This is not the case with other patent search engines. You can choose to browse by patent number, assignee, language, country code, publication date, and more.

The Google Patents website allows you to browse more than 10 million granted patents and patent applications. Moreover, the search feature includes books from Google Scholar and documents from the Prior Art Archive.

While this site is easy to navigate, there are some drawbacks. First, the database is not updated regularly. Sometimes, it may even miss recent publications. Second, the database does not have the same level of detail as the official websites of individual patent offices. As a result, you may need to do a bit of research to verify information.


The European Patent Office (EPO) produces and maintains the INPADOC free patent search database. This online service provides legal status information from more than 50 international patent offices, as well as from national and regional patent authorities.

As part of the EPO’s INPADOC service, the Patent Family Register is also maintained. It allows users to retrieve a list of all members of a given patent family. These patents have been grouped together based on their similar technical content.

However, not all members of a patent family are contained in the Patent Family Register. In addition, data gaps can occur.

A comprehensive search on a given extended patent family is not possible on the free patent search tools. Depending on the needs, users may prefer to use commercial databases.

Espacenet is one of the better known patent search tools. It is created by the EPO and includes smart search, classification search, and smart downloads.

The Lens is another free patent search tool. It allows users to perform searches by title, full text, or filing number. Additionally, this tool allows users to perform searches by publication number.

While there is no thesaurus, the quick search function is relatively straightforward. Users can enter up to four keywords in the title or abstracts and select “Quick Search” to view the results.

In addition to its full text search capabilities, the USPTO site also offers facilities for classification, key word searches, and patent continuations.


Espacenet is a patent database platform developed by the European Patent Office (EPO). This free patent searching tool provides a wide range of information about inventions. The database includes inventors, inventors’ names, patents and patent families. It also provides search results by classification, full text, and sort functions.

The Espacenet service claims to provide records on more than 90 million patent documents worldwide. Most member states in Europe and the United States have access to the Espacenet service in their national languages.

In addition to providing a wide range of search features, the Espacenet database provides full text in English and a variety of other languages. Users can view original language texts and machine-translated descriptions. They can also print bibliographic data.

Using the Espacenet database, users can access information on inventions and patents from 1836 to present. Patents can be searched by country, language, or type. A search result list is also provided in an Excel table format.

Another useful feature of the Espacenet patent database is the “Citing Documents” feature. This allows you to see a list of all patents that are citing the current patent. Using this feature, you can discover documentary information, such as the dates and places where patents were issued.

Another feature of the Espacenet database is the ability to download patent documents as PDFs or xlsx files. If you are interested in a specific type of document, you can search for its publication date, priority date, and character-coded description.

Espacenet provides a comprehensive collection of patents published throughout the world since 1920. However, it does have some limitations.

Despite its shortcomings, the Espacenet database can help solve complicated issues with patent novelty searches.