1 If the patent application was filed on or after June 8, 1995, the starting patent term is 20 years. 2  This accounts for the vast majority of patents in force today. 3  The 20 year term is calculated based upon the priority filing date, not counting provisional application or the original filing in a foreign country.
The report indicates that the median installed price of PV systems completed in 2012 was $5.30/W for residential and small commercial systems smaller than 10 kilowatts (kW) in size and was $4.60/W for commercial systems of 100 kW or more in size.
However, by the end of 2014, residential rooftop PV system installed prices averaged $3.48 per watt, down from $3.83 cents per watt in the first three months of 2014.This represents the largest absolute decline across any of the market segments.riven by significant reductions in balance-of-system costs, the cost for a medium-scale commercial system averaged $2.25 per watt by the end of 2014. This is down from $2.53 per watt in the first quarter of 2014.