Patentrecht Basics > Scope of Protection of Patents

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Finding patent claims

Based on the linked patent documents, for example one of the following: https://depatisnet.dpma.de/DepatisNet/depatisnet?action=pdf&docid=EP000004504022B1&xxxfull=1 https://depatisnet.dpma.de/DepatisNet/depatisnet?action=pdf&docid=EP000004109685B1&xxxfull=1 https://depatisnet.dpma.de/DepatisNet/depatisnet?action=pdf&docid=EP000004498443B1&xxxfull=1 https://depatisnet.dpma.de/DepatisNet/depatisnet?action=pdf&docid=EP000004480745B1&xxxfull=1 https://depatisnet.dpma.de/DepatisNet/depatisnet?action=pdf&docid=EP000004484686B1&xxxfull=1

Question: Find the patent claims and determine which patent claims are independent and which are dependent. Can you also find subordinate patent claims?

Umbrella

A manufacturer develops an umbrella with an automatic drying function. The umbrella is equipped with a thin heating wire in the fabric, which emits a slight amount of heat after closing. This dries the umbrella within a few minutes and allows it to be stored in a bag without dripping. There are now two different ways to limit the patent claim: “... wherein the heating wire is controlled so that it automatically switches on after the umbrella is closed.” “... wherein the heating wire is made of copper wire.”

Question: Which limitation should be included in a patent claim in order to secure the core of the invention and not unnecessarily narrow the scope of protection?

A developer launches a drinking bottle with a self-cleaning inner wall. A special coating is integrated into the inner surface, which is activated by UV light and breaks down bacteria. This keeps the bottle hygienic, even if it is not rinsed for a long time. Now, the patent claim could be restricted in two different ways: “... wherein the coating is activated by a UV light source integrated into the bottle cap.” “... wherein the coating is colored blue.”

Question: Which limitation contributes to the protection of the invention and which leads to an unnecessary restriction?

A developer launches a drinking bottle with a self-cleaning inner wall. A special coating is integrated into the inner surface, which is activated under UV light and decomposes bacteria. This keeps the bottle hygienic, even if it is not rinsed for a long time. Now, the patent claim could be restricted in two different ways: “... whereby the coating is activated by a UV light source integrated into the bottle cap.” “... whereby the coating is colored blue.”

Question: Which limitation contributes to the protection of the invention and which leads to an unnecessary restriction?

Question: To what extent does the wording of a patent claim influence the scope of protection and thus the number of items covered?

Question: What is the function of patent claims within a patent specification, and why are they crucial for legal protection?

Claim Feature Chart

Question: What is a claim feature chart of a patent claim and for which purposes can it be used?

Question: What role does the feature structure play in determining whether an object falls within the scope of protection of a patent claim?

Question: How does the number of features of an independent claim relate to the number of features of a dependent claim?

Scope of dependent and independent claims

Question: Can an object that does not fall under the features of an independent claim fall under a dependent claim?

Question: What additional features must be fulfilled in order for a dependent claim to be fulfilled in addition to the requirements of the independent claim?

Question: What distinguishes an independent patent claim from a dependent patent claim?

Question: What role do dependent claims play as a fallback position in examination or nullity proceedings?

Question: What are subordinate patent claims and how do they differ from dependent claims?

Question: How do dependent, independent, and collateral patent claims relate to the quantities assigned to them?

Question: Why should a third party first consider the independent claims when examining whether their subject matter is affected?

Question: Can a subject matter fall under several claims of a patent at the same time?