Background: The TPP technology is a “nano-optics” 3D printing technology that develops
in recent years. Compared with the traditional 3D printing technology, the TPP-3DP technique that
takes near-infrared light femtosecond pulse laser as the light source can break through the limitation of
optical diffraction and manufacture nanoscale 3D structures in arbitrary shapes with high resolution.
Method: The research develops a claim-based patent analysis method to identify technical features via
the analysis of claim, especially the analysis of plural elements of independent claim. Furthermore, we
analyze the subject matters and technical features of claims through claim-base analytical method to
observe the patent trend of competitors and understand the current situation of competitors’ technical
distribution in related industries, in order to provide useful information for enterprises to determine
Results: The result shows 3M Company possesses numerous patent portfolios that base on the diversified
innovative applications of TPP technology. Nanoscribe Company has a long-term advantage in monopolizing
this technology. The patents in TPP-3DP field can be grouped into five categories relating to application,
including micro-optics device, photonic crystal, biomedical, microfluidics and MEMS.
Conclusion: The findings of this review confirm the TPP-based 3D printing (TPP-3DP) technology has
broad application prospects, of which the hydrogel material applied in tissue engineering and drug delivery
is the future trend. Highly-initiated water-soluble initiators are particularly needed to increase its
resolution and will be the direction of emerging technology in this domain.