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＜機械翻訳＞

Can I add new content to a patent after filing? [Rewritten]

(Q) I filed a patent.

I later discovered that someone else was working on related content.

I would like to add this work to the patent claims.

Is this possible?

(A) The procedure depends on the content of the patent.

Is the work of the other party incorporated anywhere in the patent application?

(1) Yes, it is incorporated → You can add that work to the patent claims.

(2) No, it is not incorporated → You cannot add that work to the patent claims.

■ Solution for (2)

There is a system called domestic priority for adding new content to a patent.

You can file a new patent application with the new content added.

However, it is difficult to say whether using domestic priority will be effective this time.

Newly added content → Patentability is determined based on the new patent application date.

(This is natural in a sense. You can't win by playing rock-paper-scissors after the fact.)

The newly added content has lost its novelty due to the other party's work!

That's certainly possible (★)

■ Case (2) When Domestic Priority is Effective

For example, suppose someone else has achieved a good result by combining a and b!

Let's say your company's patent application combines device X and a.

[Claim 1] Device X + a

In this case, you'd like to add b to device X + a!

You might also want to obtain a patent for device X + a + b.

In this case, you could consider adding it using the domestic priority system.

[Claim 1] Device X + a

[Claim 2] Device X + a + b

(Note) Corresponding content must also be added to the specification and drawings.

*

The patentability of device X + a + b is determined differently from case (★).

Device X + a + b does not immediately lose novelty or inventive step, even if a + b has been made public through the implementation of another company.

■ Consult a patent attorney

Examples like the one above can be very confusing.

How common is the use of domestic priority like in this case in practice?

I've never looked into it.

This is something that came to mind while writing this blog in response to your question.

If you are using a patent attorney, it is best to consult with them.

If you filed your initial patent application yourself,

→ It is best to consult with a patent attorney about what measures you can take.

For patents that are important to you, seek the help of an expert.