There are three types of different patents (1) Utility Patents: Issued for the invention of a new and useful process, machine, manufacture, or composition of matter, or a new and useful improvement thereof, it generally permits its owner to exclude others from making, using, or selling the invention for a period of up to twenty years from the date of patent application filing ++, subject to the payment of maintenance fees. Approximately 90% of the patent documents issued by the USPTO in recent years have been utility patents, also referred to as "patents for invention." (2) Design Patents: Issued for a new, original, and ornamental design for an article of manufacture, it permits its owner to exclude others from making, using, or selling the design for a period of fourteen years from the date of patent grant. Design patents are not subject to the payment of maintenance fees. (3). Plant Patents: Issued for a new and distinct, invented or discovered asexually reproduced plant including cultivated sports, mutants, hybrids, and newly found seedlings, other than a tuber propagated plant or a plant found in an uncultivated state, it permits its owner to exclude others from making, using, or selling the plant for a period of up to twenty years from the date of patent application filing. Plant patents are not subject to the payment of maintenance fees.

Myopia is generally what happens when unprecedented opportunities are placed before them. Those in the know generally do better than those in the worry. Consider Cetus, a startup biotech with a focus on a liver drug. The FDA delayed the approval of the drug, and a major funding crisis ensued. Chiron offered to take over the liabilities contingent on the sale of two patents (# 4,683,202 and # 4,683,195) to a third party, Roche Molecule for $300M (in 1993). This sale was stalled because DuPont challenged the validity of the patents, based on the formal claims written by the inventor (not a patent attorney), Kary Mullis. In the end, the soap opera turned out well for the investors with weak constitutions. For $300M, they sold the two patents to Roche, turned the company over to Chiron, and walked away. Kary Mullis won the Nobel prize for his invention embedded in these two patents, known as polymerase chain reaction (PCR) which allows DNA to be cloned. Over 4000 patents in biotech cite these original two patents. In our estimation, $300M represents "pennies on the dollar" valuation of these patents. The shareholders got a payday, and left the game. Roche on the other hand is thriving based on its intangible assets. Let IPstreet.com assist you.

Patents have a maximum life of 20 years and, therefore, a 20-year potential monopoly. Patents that are just beginning their life and which have longer to run on the their potential monopoly position understandably will have more value. It is rare that a patent nearing the end of its term will cause a great threat to its competitors. It is almost certain that they will have devised technologies or products of their own by then that will not interfere with the patent owners monopoly position. In addition, one has to take into consideration the potential business life of a patent, i.e., the duration, which a patent is likely to be economically useful, if other subsequent patents are providing better alternatives to it.

Although, the length of utility and plant patent protection (patent term) was previously seventeen years from the date of patent grant, utility and plant patents filed after June 8, 1995 now have a patent term of up to twenty years from the date of filing of the earliest related patent application. Utility and plant patents which were applied for prior to June 8, 1995, and which were or will be in force after June 8, 1995, now have a patent term of seventeen years from the date of patent grant or twenty years from the date of filing of the earliest related patent application, whichever is longer. Utility patents are subject to the payment of periodic maintenance fees to keep the patent in force. Patent terms can be extended under some specific circumstances. See the U.S. Code Title 35 - Patents for a full description of patent laws.

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