Patents are designed to protect creations and designs, but how long a patent lasts for is dependent on a number of factors. The length of time that a patent offers protection, depends largely on what type of patent is issued and whether required maintenance fees are paid to keep the patent active. slide 1 of 6.
A viral infection is a disease that can be caused by different kinds of viruses, of which the influenza-virus is best known.
a viral infection is like the flu and mononucleosis combined. you have the same symptoms that you would have with the flu. but it isn't the flu. to find out more ask you docto â¦ r at your next appointment or call and ask the person that answers the phone.hope this helps or helped you a little. viral infection is like the flu and mononucleosis combined. you have the same symptoms that you would have with the flu. but it isn't the flu. to find out more ask you docto â¦ r at your next appointment or call and ask the person that answers the phone.