definiens: means Technology that is or was ( a ) invented by officers, employees or agents of, or consultants to, PSIVIDA or any of its Affiliates, alone or jointly with Third Parties, in the course of performing the Research Plan during the Research Term, ( b ) jointly invented by officers, employees or agents of, or consultants to, both PSIVIDA and PFIZER or a ny of their respective Affiliates or sublicensees, in each case, alone or jointly with Third Parties, in the c ourse of performing the Research Plan during the Re search Term, ( c ) invented by officers, employees or agents of, or consultants to, PFIZER or any of its Affili ates or sublicensees, alone or jointly with Third Parties, in the course of performing the Research Plan durin g the Research Term or ( d ) acquired by purchase, license, assignment or other means from Third Parties by PS IVIDA or any of its Affiliates, by PSIVIDA and PFIZER or any of their respective Affiliates or by PFIZER or any of its Affiliates, in each case, alone or jointly with Thi rd Parties, in order for such Party ( or Parties ) to perform the Research Plan during the Research Term . In all case s, inventorship shall be determined according to Un ited States law