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The original patent term under the 1790 Patent Act was decided individually for each patent, but "not exceeding fourteen years". The 1836 Patent Act (5 Stat. 117, 119, 5) provided (in addition to the fourteen-year term) an extension "for the term of seven years from and after the expiration of the first term" in certain circumstances, when the inventor hasn't got "a reasonable remuneration for ...
The term of a patent is the maximum time during which it can be maintained in force. It is usually expressed in a number of years either starting from the filing date of the patent application or from the date of grant of the patent. In most patent laws, annuities or maintenance fees have to be regularly paid in order to keep the patent in force.
The abrupt drop in sales expected after the date of patent expiration can be estimated with the following formula: [2] = where A is the peak sales value before the patent expiration and Y the years after the peak sales year (the peak sales year is considered year 0), and B is an exponent with value -1.032. The formula above could be simplified ...
Over the past decade, drug companies have become increasingly dependent on blockbuster drugs -- patented specialty drugs that generate more than $1 billion in sales annually. However, when a major ...
Merck is already reeling from the loss of exclusivity for its blood pressure drugs Cozaar/Hyzaar. The two have seen sales slump by 41% in 2010 to $2.1 billion. Still, Snyder says "Merck is ...
Patent cliff refers to a dramatic dip in the revenue of a merchandise upon patent expiry. [32] It is a prominent phenomenon in the proprietary drug industry due to the vast gap of prices between the proprietary drug and the generic drug. [33] Since 2010, numerous pharmaceutical board busters have started to become off-patent. [34]
Wikipedia entry for Google Patents.Google Patents is a search engine from Google that indexes patents and patent applications from the United States Patent and Trademark Office.
Generic pharmaceutical price decay is what happens (in the UK) once the originator brand has lost its patent exclusivity (patent expiry) and generic versions of the originator brand have been launched. [1][2][3][4][5][6] Simple 'scalloped curve' generic price decline. The number of license holders entering the market is controlled by the ease ...
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