A patent problem of communication specialty

Determining the scope of patent protection is a simple and complicated problem. The scope of patent protection shall be subject to the records in the claims, especially the scope required by the independent claims in the claims. The scope of protection has a great relationship with the writing level of patent agents.

To put it simply: judging from the basic principles of infringement, the scheme of infringement should include all the technical features recorded in a patent claim, and achieve the same function and basically the same effect before infringement can be recognized.

But in the actual operation process, this judgment is indeed a very complicated process.

According to your description, the short answer is that the algorithm of digital filter is not within the scope of protection. The reason has nothing to do with the contents recorded in your patent claim and specification, but because the calculation method belongs to the rules of intellectual activity (Article 25 of the Patent Law) and is not protected by the Patent Law.

If you want to protect the algorithm of this filter, you have to avoid 25 items when writing application documents. Please find an experienced agent to represent you in this situation.