Patent Cooperation Treaty

Get Guidance for Do-it-yourself Patent Cooperation Treaty (PCT)

Patent Cooperation Treaty (PCT) Services

The Patent Cooperation Treaty (PCT) is an international treaty that enables inventors to submit a single patent application that can be used to request patent protection in different countries. The PCT application process is managed by the World Intellectual Property Organization (WIPO), which is an agency of the United Nations.

  • By filing a PCT application, inventors can avoid the expense of filing individual patent applications in each country while also securing an early filing date.
  • The PCT application process includes a search and examination of the invention by an International Searching Authority (ISA) to determine whether the invention meets the patentability requirements.
  • The ISA also provides a written opinion on the patentability of the invention.
  • Once the PCT application is filed, the inventor has up to 30 months from the priority date to enter the national or regional phase in each country where patent protection is sought.
  • During this phase, the inventor must file a patent application in each country and follow each country’s patent laws and regulations.

Note: Filing a Patent Cooperation Treaty (PCT) application can be a complex process that involves legal and technical expertise. Overall, while it is possible to file a PCT application yourself, it is a complex and risky process. Working with a patent attorney or agent can help ensure that your application is filed correctly and that all necessary steps are taken to protect your invention.


  • You can file a Patent Cooperation Treaty (PCT) application yourself, without the assistance of a patent attorney or agent.
  • However, as mentioned earlier, filing a PCT application requires knowledge of patent law and regulations, as well as technical expertise, and missing any important steps or deadlines can have serious consequences.
  • If you choose to file a PCT application yourself, you should be aware of the risks involved and take the necessary precautions to ensure that your application is filed correctly.
  • It is highly recommended that you thoroughly research the process and seek guidance from resources such as the World Intellectual Property Organization (WIPO) website, which provides detailed information on the requirements and procedures for filing a PCT application.
  • It may also be beneficial to seek the advice of a patent attorney or agent, who can review your application and provide feedback and guidance on potential issues.
  • Even if you ultimately decide to file the application yourself, consulting with a professional can help ensure that you are fully informed and prepared to navigate the process.


Lack of legal expertise

PCT applications are legal documents, and filing one requires knowledge of patent law and regulations. If you are not a patent attorney or patent agent, you may not have the legal expertise necessary to navigate the PCT process effectively. This can lead to errors or omissions that could negatively impact your application.

Technical errors

Filing a PCT application requires a detailed understanding of the technical aspects of your invention. If you make technical errors, your application may be rejected or deemed invalid. Patent attorneys and agents are trained to understand technical aspects and can help avoid such errors.

Missed deadlines

PCT applications have strict deadlines that must be met. If you miss a deadline, your application may be abandoned, and you may lose your rights to file a patent in some countries. Patent attorneys and agents can help ensure that all deadlines are met on time.

Inadequate patent search

Conducting a thorough patent search is critical before filing a PCT application. A patent attorney or agent has the experience to conduct a comprehensive search and identify any prior art that may affect your application. Failing to perform an adequate search could result in your application being rejected.

Costly mistakes

Mistakes made during the PCT application process can be costly. If your application is rejected, you may need to pay to file an appeal, which can be expensive. It may also be necessary to hire a patent attorney or agent to correct any errors made in the initial application.




Are you an inventor or entrepreneur with a unique idea? Do you want to protect your intellectual property and ensure that your idea is original? Then a patent search is an essential step in the patent process.

The Patent Cooperation Treaty (PCT) is an international treaty that allows inventors and companies to seek patent protection for their inventions in multiple countries by filing a single international patent application. The PCT system is administered by the World Intellectual Property Organization (WIPO), and currently has over 150 member countries.

Benefits of choosing us as your Patent Attorney

  • A simplified and streamlined application process that saves time and money.
  • The ability to delay the expense of filing individual patent applications in each country.
  • An early filing date that can help establish priority over competing patent applications.
  • An international search and examination of the invention to determine patentability.
  • The ability to secure patent protection in multiple countries with a single application.

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The state of the art is everything that has been made public either verbally or in writing prior to the application being filed. The aim of the novelty search is to ascertain this state of the art.

Can I file a patent internationally?

Yes, there are international treaties like the Patent Cooperation Treaty (PCT) that allow you to file a single application for protection in multiple countries.

What should I do after conducting a patent search?

After your search, analyze the results to see if there are any patents that could be a barrier to obtaining a patent for your invention. Discuss your findings with a patent attorney to determine the best course of action, which might include:

  • Modifying your invention to avoid existing patents.
  • Developing a patenting strategy.
  • Deciding whether to pursue a patent application.

What information should I gather before conducting a patent search?

Before searching, it's helpful to have a clear understanding of your invention, including:

  • The technical details and functionality
  • The problem it solves
  • Unique features or advantages

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