''Cournot problem - (CP)''
''multiple marginalization - (MM)''
'''Overlapping Patents - (OP)'''
Second most common foundation of a thicket. Vertical overlap is largely adjacent. Horizontal likely due to poorly defined rights.
Refinement patents and research tool patents can result in OP
'''Example of:'''
''Imperfectly defined property rights - (IDPR)'''
'''Look for:'''
''patent overlap - (PO)''
''overlapping claims - (OC)''
''similar claims - (SC)''
''simultaneous infringement - (SI)''