can patent
Regular verb: patent - patented- patented

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can patent
you can patent
she can patent
we can patent
you can patent
they can patent 	I can be patenting
you can be patenting
she can be patenting
we can be patenting
you can be patenting
they can be patenting	I can have patented
you can have patented
she can have patented
we can have patented
you can have patented
they can have patented	I can have been patenting
you can have been patenting
she can have been patenting
we can have been patenting
you can have been patenting
they can have been patenting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't patent
you can't patent
she can't patent
we can't patent
you can't patent
they can't patent 	I can't be patenting
you can't be patenting
she can't be patenting
we can't be patenting
you can't be patenting
they can't be patenting	I can't have patented
you can't have patented
she can't have patented
we can't have patented
you can't have patented
they can't have patented	I can't have been patenting
you can't have been patenting
she can't have been patenting
we can't have been patenting
you can't have been patenting
they can't have been patenting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I patent?
can you patent?
can she patent?
can we patent?
can you patent?
can they patent? 	can I be patenting?
can you be patenting?
can she be patenting?
can we be patenting?
can you be patenting?
can they be patenting? 	can I have patented?
can you have patented?
can she have patented?
can we have patented?
can you have patented?
can they have patented? 	can I have been patenting?
can you have been patenting?
can she have been patenting?
can we have been patenting?
can you have been patenting?
can they have been patenting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I patent?
can't you patent?
can't she patent?
can't we patent?
can't you patent?
can't they patent? 	can't I be patenting?
can't you be patenting?
can't she be patenting?
can't we be patenting?
can't you be patenting?
can't they be patenting? 	can't I have patented?
can't you have patented?
can't she have patented?
can't we have patented?
can't you have patented?
can't they have patented? 	can't I have been patenting?
can't you have been patenting?
can't she have been patenting?
can't we have been patenting?
can't you have been patenting?
can't they have been patenting?