We have come across a lot of bizarre Intellectual Property litigations in the past and the recent trademark dispute involving the banking giant Citigroup and the technology giant AT&T is no different from being considered as one such litigation. It is to be noted that Citigroup had earlier applied for the trademark "THANKYOU". Surprisingly they were able to get this phrase trademarked to use it in relation to their goods and services. However, AT&T allegedly used the mark "Thanks" in…