Does the inclusion of "Hot Water" in Claim 1 make it new subject matter?

The reason that the inclusion of "Hot Water" in Claim 1 does not introduce new subject matter is because it was already mentioned in that claim. In patent law, for a modification to introduce new subject matter, the information being added must not have been previously disclosed in the original application. Since "Hot Water" is already part of Claim 1, its inclusion does not alter the substance or scope of the claim or introduce any new elements that were not already covered. Therefore, it does not create new claims or require a change to the specification, and thus, the integrity of the original claim remains intact.

New subject matter is typically assessed during the examination process to ensure that nothing outside the initial disclosure is added in a manner that would require additional examination or could impact the originality of the claims. In this case, because "Hot Water" was already part of the claim language, it confirms the existing subject matter rather than introducing anything new.