NIPPON TELEGRAPH AND TELEPHONE CORPORATION

NIPPON TELEGRAPH AND TELEPHONE CORPORATION has been granted 3,279 US utility patents between 2015 and 2025, placing NIPPON TELEGRAPH AND TELEPHONE CORPORATION at rank #113 across all assignees tracked by PlainPatent. This portfolio spans 198 distinct Cooperative Patent Classification (CPC) subclasses, averaging 9.9 claims per patent with primary concentration in H04L (TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION). As a Foreign Corporation, NIPPON TELEGRAPH AND TELEPHONE CORPORATION is one of the broader-portfolio assignees in the PatentsView dataset. The composite Innovation Score of 78.9/100 blends portfolio volume, filing velocity, technology breadth, and claim depth into a single comparable measure drawn directly from USPTO PatentsView records.

Filing cadence tells the strategic story. Between 2020 and 2025 the company received 2,838 grants, compared with 441 in the 2015–2019 window — a +544% shift in five-year velocity. An acceleration of this magnitude signals aggressive R&D investment and expanding technical ambition. The Foreign Corporation classification further shapes interpretation, since corporate, government, and individual filers pursue patents for materially different reasons.

Claim depth and technology breadth together indicate competitive posture. NIPPON TELEGRAPH AND TELEPHONE CORPORATION's 9.9 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while a diversified footprint across 100+ CPC subclasses spreads risk across many technology fronts. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark NIPPON TELEGRAPH AND TELEPHONE CORPORATION against peers pursuing similar technology classes.