This section summarizes and reviews several fundamental parameters of the global patent activity in assistive devices and technologies for visually and hearing impaired persons, for later usage in conclusion making and to provide a greater understanding of dynamics in the field.
Figure 18 shows the breadth of geographic protection per patent family arrayed over time, and plotted alongside the overall collection activity time-series analysis (in grey).
There has been a strong dilution in the level of international patent protection due to the increases in activity from BRICS countries including China, Russia and Brazil, a large proportion of which is protected locally in just a single patent jurisdiction.
Normally, this type of analysis would tend to point to a technology field undergoing additional rounds of more fundamental research – with the increasing risks associated for individual innovators reflected in their reticence to invest heavily in the protection of their IP rights.
Figure 18 - Average Number of Subsequent Filing Events for Patent Families in the Assistive Devices and Technologies for Visually and Hearing Impaired Persons Landscape for Families Filed Each Year; Co-Plotted with Overall Timeline of patent Activity
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