definiens: . M omenta Collaboration Know - How means ( a ) all Know - How constituting, based upon or derived from inventions or developments which are conceived and reduced to pra ctice or developed solely by the employees, contractors ( subject to Section 8.3 ), consultants or agents of Momenta or its Affiliates during, and in the conduc t of, the Collaborative Program, excluding Improvements to [COMPANY] Know - How or Improvements to [COMPANY] Collaboration Know - How, and ( b ) ( i ) Improvements to Momenta Know - How or ( ii ) Improvements to Momenta Collaboration Know - How, whi ch, with respect to each of ( b)(i ) and ( b)(ii ), are made solely by the employee s, contractors, consultants or agents of [COMPANY] or its Affiliates, or jointly b y the employees, contractors, consultants or agents of [COMPANY] or its Affiliates, on the one hand, and by the employees, contractors, consultants or agents of Mo menta or its Affiliates, on the other hand, during, and in the conduct of, the Collaborative Program