ATP Tour Trademark and Logo (Terms and Conditions) Logo or Challenger Tour Brand Mark other than the right to use the ATP Logo or  Challenger Tour Brand Mark in accordance with this agreement. In addition to Exhibit A, the following are the terms and conditions for the use of any  ATP Tour trademark or logo (collectively referred to herein as the “ATP Logo”). Only  ATP Tour tournaments referred to in CIRCUIT REGULATIONS shall be permitted to  use the ATP Logo. ATP Challenger Tour tournaments are authorized to use only the  ATP Challenger Tour Brand Mark (collectively referred to herein as the “Challenger  Tour Brand Mark”) (see “EXHIBIT A.15”). 1) Each tournament acknowledges that ATP has created the ATP Logo and has  used the ATP Logo on and in connection with the promotion of the sport of ten - nis, recreational facilities, tennis videos, sporting goods, clothing, various printed  matter, and other officially licensed products and merchandise, and have sought  worldwide trademark registration for same and, through the use of the ATP Logo,  ATP has developed goodwill associated with the ATP Logo. 2)  Subject to the terms and conditions set forth herein, ATP hereby authorizes each  tournament, by this license, to use the ATP Logo (and the applicable 1,000, 500  or 250 Tournament Stamp) or Challenger Tour Brand Mark, as applicable, in  connection with the advertising and promotion of such tournament. This authori - zation and license shall (i) in the case of each ATP Tour tournament, be subject  to such ATP Tour tournament remaining a member in good standing of ATP as  well as compliance with the other terms and conditions set forth herein, and (ii) in  the case of each ATP sanctioned tournament or event, including ATP Challenger  Tour events, be subject to such tournament maintaining its sanction with ATP  in good standing as well as compliance with the other terms and conditions set  forth herein. Such license will be limited to written advertising and publicity, such  use being for the sole purpose of identifying a tournament as an ATP Tour or  Challenger Tour tournament and will not extend to any use that exploits the ATP  Logo or Challenger Tour Brand Mark in any other fashion or to the use of the ATP  Logo or Challenger Logo on merchandising or products of any kind without the  express written approval of ATP. 3) Use of the ATP Logo or Challenger Logo by a tournament shall be restricted  to the advertising and promotion of such tournament. The use of the ATP Logo  must be approved in advance by ATP. 4)  The use of the ATP Logo or Challenger Tour Brand Mark by a tournament does  not extend to use on merchandise or resold products without the express written  approval of ATP, unless obtained through an official ATP licensee. 5) However, the ATP Logo or Challenger Tour Brand Mark may be used by a tour - nament to produce and sell tournament T-shirts and sweatshirts (not collared  shirts) with the ATP Logo or Challenger Tour Brand Mark not to exceed four (4)  square inches (26 sq. cm.). Express written approval is required from ATP if a  tournament wants to produce these items itself. No approval is required if the  T-shirts and sweatshirts are obtained from an approved ATP licensee. 6) Each tournament hereby acknowledges that ATP owns all rights, title and inter - est in and to the ATP Logo (and the applicable 1,000, 500 or 250 Tournament  Stamp) and Challenger Logo and each tournament agrees it will do nothing in - consistent with such ownership nor attack ATP’s title or interest in and to the ATP  11)   If a tournament shall fail to perform or observe any term, condition, agreement, or  covenant in this “EXHIBIT B - ATP Tour Logo”, ATP shall have the right to auto - matically terminate this authorization and license forthwith. 10)  Each tournament agrees that such tennis tournament and related services identi - fied in connection with the ATP Logo and Challenger Tour Brand Mark shall be of  the highest quality and shall conform to the high standards and reputation of ATP.  Each tournament acknowledges that the provisions of this paragraph are of the  essence of this authorization and license.  9) Each tournament agrees to use the ATP Logo or Challenger Tour Brand Mark  strictly in compliance with and in observance of any and all applicable laws and  strictly in accordance with ATP rules and regulations and guidelines and will take  whatever steps are reasonably necessary to fully protect ATP’s ownership of the  ATP Logo and Challenger Tour Brand Mark, including, without limitation, such  legends, markings and notices in connection therewith as may be required by  ATP. 8) Each tournament agrees that all goodwill that is or shall become associated with  the ATP Logo or Challenger Tour Brand Mark shall be the sole property of ATP.  7) Each tournament agrees that it will not file a trademark application or otherwise  attempt to register the ATP Logo (and the applicable 1,000, 500 or 250 Tourna - ment Stamp) or Challenger Tour Brand Mark, or any trademark or logo that may  incorporate the ATP Logo or Challenger Tour Brand Mark, for any goods or ser - vices whatsoever. Each tournament shall promptly notify ATP of any infringement  of the ATP Logo or Challenger Tour Brand Mark or any act of unfair competition by  third parties relating to the ATP Logo or Challenger Tour Brand Mark, whenever  such infringement or act shall come to the attention of a tournament. X. EXHIBITS X. EXHIBITS 251 250