One assignee leads the ranked field with 121 records out of 761 in scope, well ahead of the fifth-place holder at 26 and the tenth-place holder at 21. The top five assignees combined account for 42.4% of all records, and the top ten reach 57.4%, so the field is concentrated among a handful of turbine OEMs and offshore installation contractors rather than spread evenly. Anyone entering this space should expect to run into prior art from this same small group first, since they cover both structural and installation-method claims.

Filings rose steadily to a peak of 110 in 2021, then fell to 61 by 2024, a 45% decline over that three-year span. That does not necessarily mean the technology is losing relevance — it more likely reflects that earlier, broader claim space around transition pieces and pile driving methods has already been staked out. Because publication lags filing by roughly 18 months, the lower counts shown for 2025 and 2026 are incomplete and should not be read as a continued decline.

In this dataset, claims are not neatly split between the two structure types; instead, IPC classification shows installation and marine-engineering codes (F03D at 58.0% of records, E02B at 30.7%) appearing more often than pure foundations-and-earth-drilling codes (E02D at 25.8%). This suggests that regardless of whether a filing concerns a monopile or a jacket, a large share of the inventive content covers how the structure is installed, aligned and connected to the transition piece rather than the base structure geometry alone.