Performing patent searches using the CPC scheme has several benefits. One of the most important is that it helps in making a more accurate search. It also allows for backward citations. This means that you can filter the classifications by the most references. It also allows for the possibility of searching by USPC code. You can even use it to search for oppositions.

Search by USPC code


Using the USPC code to search for United States patents is a useful tool. However, it’s important to remember that the code can only be used to narrow your search results. This means that you’ll want to also search for keywords, definitions, and subject matter descriptions.

For example, you may want to use the CPC code to find a patent that describes folding workbenches. However, a search for SPEC/(folding and table) will never return a patent document that describes such a folding workbench.

Alternatively, you can try searching by keyword or classification code. This is a much more effective method because it uses keywords and class schedules to identify relevant patents. But be aware that this method is very inefficient and can be time-consuming.

Another option is to use the USPTO web databases. These include the USPTO’s Patent Full-Text and Image Database (PatFT) and AppFT. These databases contain the full text of all granted patent applications from 1790 to present.

In addition to these databases, the USPTO’s Classification Home Page is also a good source for locating classification orders. These orders often affect existing definitions. You should also review notes that apply to pertinent classifications.

Regardless of which of these methods you choose, it’s important to conduct a thorough review of the relevant definitions to find the most accurate classification. It’s also helpful to look for related subclasses. Fortunately, a number of patent search tools already accept CPC codes.

Choosing the right keywords is a tricky task. Because there are many variations of language and spelling, it’s difficult to determine which terms will accurately describe a particular invention. To do this, you should start by scanning the notes of appropriate class schedules for any related subclasses.

Filter classifications by most referenced

Using the Cooperative Patent Classification (CPC) scheme for your patent searches can be helpful. However, it’s important to understand how it works. The CPC classification system is a collaborative effort by the United States Patent and Trademark Office and the European Patent Office. It’s a system that has many advantages over the traditional ECLA system.

While the CPC scheme does have a few limitations, it can help streamline the patent search process. Specifically, the CPC classification system is a better way to identify patents in specific technological fields. The system is also more descriptive. This will allow patent professionals to conduct patent searches more efficiently.

The CPC classification system is also useful when it comes to filtering out your search results. Similarly to the MeSH annotations found in PubMed, you can use the classification information to find relevant patents.

A patent classification search can teach you a lot about your industry. For example, you can learn about the technology your competitors are using and their marketing plans. A comprehensive CPC class hierarchy will save you time in typing in 916 different codes.

You can perform a classification search using the USPTO’s new website. Just click the “Classification Explorer” button on the dropdown menu next to the “Search” button. The pop-up will display a list of classifications for your selected search keywords. You can then browse through a hierarchical list of classifications. The classification system has been in use since 1836.

There are a number of other patent search tools available to assist with your research. One option is LexisNexis TotalPatent One. The platform allows you to search over 100 patent databases at the same time. It provides full text documents and high-resolution images. You can also attend a free on-demand webinar to learn more about the features of the platform.


Opposition search

Using the CPC scheme to conduct an online opposition search is no small feat. In fact, there are more than 40 million documents in the database, many of which are not in the public domain. In addition, there are several national and international collections which can be used for comparative research. To get you started, here are a few tips and tricks to help you get the most out of your CPC search. Firstly, don’t forget to read the instructions carefully before hitting the search button.

Second, do your research and make sure that you’re doing it in the right frame of mind. Third, don’t be afraid to ask questions. While sifting through the hundreds of thousands of documents is a daunting task, the experts will be glad to lend a hand.

Finally, if you’re in the market for a CPC search provider, be sure to check out the competition. This will provide you with an edge in a competitive arena. The most important tip is to be sure that the company you choose is a legitimate CPC competitor. If not, you’re in for some nasty surprise. You may be surprised to learn that the CPC scheme is not a complete list, and that savvier competitors are in the same boat as you.

Backward citations

Using the Cooperative Patent Classification (CPC) system for conducting patent searches can help you identify relevant patents that are close to the subject of your search. CPC has been designed to improve the consistency and navigation of search results across different offices. It was implemented in January 2013 at the European Patent Office (EPO) and the US Patent and Trademark Office (USPTO). The CPC uses the same structure as the IPC in the first four digits, but has additional classifications. The CPC also incorporates best practices of ECLA and USPC.

The system is divided into nine sections, which are named classes and sub-groups. These sections are assigned CPC codes, which can be used to search patent applications.

A key benefit of the CPC scheme is that searchers can use multiple CPC codes on a single patent application. This can help expand the scope of your search. The search result will include all patent documents that contain the searched code.

The USPTO and EPO share maintenance of the CPC through a multi-year planning system. This is designed to identify areas of the classification system that require revision.

The CPC was developed to facilitate work sharing on patent applications filed by both the USPTO and the EPO. The resulting system allows both offices to share resources and make the most efficient use of them.

The USPTO database contains documents that have been filed in the United States. There are several limitations to the database. While the USPTO is the largest patent agency, the listing may not go into enough detail. For instance, the listings from the International Business Machines (IBM) returned only 111221 patents.

Basic concepts in patent searching


Having a basic understanding of the CPC scheme can provide valuable lessons for a patent searcher. The scheme identifies subject matter and organizes it into hierarchical arrays. The resulting classifications are less ambiguous and enable users to focus their search early.

The CPC classification scheme is used throughout the world. It was developed by the United States Patent and Trademark Office and the European Patent Office. It is accompanied by CPC Definitions, which describe how to use the system.

The CPC classification system allows for multiple CPC codes to be assigned to a patent application. This allows for more related patent documents to be identified. It is also useful for validating/invalidating patents. These searches attempt to identify prior art that has not been acknowledged during the patent process.

The first step to classifying a document in the CPC is to define the subject matter. This is done by identifying the different inventive entities. The corresponding claims and alternative variants are also needed.

The second step is to identify appropriate groups in the CPC. Each subclass is organized into subgroups and main groups. Each subgroup is broken down into subdivisions and is labeled by a classification symbol.

Each of these symbols is assigned a position attribute. The position attribute “later” is applied to inventions allocated in later positions. The position attribute “first” is applied to inventions allocated in the first position.

Symbols are allocated in discretionary sections of the classification form. The classification form can be accessed through Espacenet. When a user hovers over a class code, a tooltip is displayed. Clicking the code presents more detailed information.

Using the CPC scheme, one can easily perform a keyword search. Most databases accept CPC codes, which can be used to expand a search. The combination of keywords is especially powerful.