"This is my IP" is an absolutely valid defense in court. There have been tens of thousands of trials with IP infringement at its core. https://en.wikipedia.org

"This is my IP" is an absolutely valid defense in court. There have been tens of thousands of trials with IP infringement at its core. https://en.wikipedia.org/wiki/List_of_copyright_case_law https://en.wikipedia.org/wiki/List_of_copyright_case_law https://en.wikipedia.org/wiki/List_of_patent_case_law https://en.wikipedia.org/wiki/List_of_patent_case_law https://en.wikipedia.org/wiki/List_of_trademark_case_law https://en.wikipedia.org/wiki/List_of_trademark_case_law https://en.wikipedia.org/wiki/List_of_United_States_patent_law_cases https://en.wikipedia.org/wiki/List_of_United_States_patent_l... https://en.wikipedia.org/wiki/List_of_United_States_Supreme_Court_copyright_case_law https://en.wikipedia.org/wiki/List_of_United_States_Supreme_... https://en.wikipedia.org/wiki/List_of_United_States_Supreme_Court_patent_case_law https://en.wikipedia.org/wiki/List_of_United_States_Supreme_... https://en.wikipedia.org/wiki/List_of_United_States_Supreme_Court_trademark_case_law https://en.wikipedia.org/wiki/List_of_United_States_Supreme_... Did you not know this?