32. A system for evaluating a patent document, comprising: a computer having a processor; a non-transitory computer readable storage medium having computer executable instructions stored thereon for execution by the processor, forming: a processing unit configured for: (a) receiving data with regard to one or more patent indices, characterizing different aspects of the patent document and contributing to a quality of the patent document, the quality of the patent document being associated with a monetary value of the patent document, each patent index having a single numerical value and being defined on a bounded interval for said each patent index having respective minimal and maximal values, and (b) processing said patent indices into a Patent Quality index according to a non-linear transformation, said Patent Quality (PQ) index characterizing the quality of the patent document by a single numerical value defined on a bounded interval for said Patent Quality index having respective PQ min and PQ max values; said transformation: being continuous, monotonous with respect to each said one or more patent indices, and non-linear with respect to at least one of said one or more patent indices; wherein said patent indices and said non-linear transformation are chosen so as to satisfy the following: tending of any one of said patent indices substantially to a respective minimal value, independent of values of other patent indices, results in said Patent Quality index tending substantially to one of the following: the PQ min ; the PQ max wherein said non-linear transformation has a parameter of non-linearity expressed as a real number; wherein said non-linear transformation is a single-valued transformation providing a single numerical value for said PQ index for any parameter of non-linearity; and (c) a visualization unit, comprising computer program code stored in the non-transitory computer readable storage medium, for visualizing the quality of the patent document by providing a correspondence between the single numerical value of said Patent Quality index and a color formed by one or more wavelengths of a visible part of light spectrum.
32. A system for evaluating a patent document, comprising: a computer having a processor; a non-transitory computer readable storage medium having computer executable instructions stored thereon for execution by the processor, forming: a processing unit configured for: (a) receiving data with regard to one or more patent indices, characterizing different aspects of the patent document and contributing to a quality of the patent document, the quality of the patent document being associated with a monetary value of the patent document, each patent index having a single numerical value and being defined on a bounded interval for said each patent index having respective minimal and maximal values, and (b) processing said patent indices into a Patent Quality index according to a non-linear transformation, said Patent Quality (PQ) index characterizing the quality of the patent document by a single numerical value defined on a bounded interval for said Patent Quality index having respective PQ min and PQ max values; said transformation: being continuous, monotonous with respect to each said one or more patent indices, and non-linear with respect to at least one of said one or more patent indices; wherein said patent indices and said non-linear transformation are chosen so as to satisfy the following: tending of any one of said patent indices substantially to a respective minimal value, independent of values of other patent indices, results in said Patent Quality index tending substantially to one of the following: the PQ min ; the PQ max wherein said non-linear transformation has a parameter of non-linearity expressed as a real number; wherein said non-linear transformation is a single-valued transformation providing a single numerical value for said PQ index for any parameter of non-linearity; and (c) a visualization unit, comprising computer program code stored in the non-transitory computer readable storage medium, for visualizing the quality of the patent document by providing a correspondence between the single numerical value of said Patent Quality index and a color formed by one or more wavelengths of a visible part of light spectrum. 33. The system as described in claim 32 , wherein the visualization unit is further configured to generate color label for visualizing the value of said Patent Quality index.