Where a patent gets classified is the first thing it tells you about its scope. UBTECH's grant US10821605B2 ("Robot motion path planning method, apparatus and terminal device," issued November 3, 2020; inventors Youjun Xiong, Jinghua Tang) sits squarely in B25J 9/1666 — the CPC bucket for programme-controlled manipulators that plan a path. That single classification quietly excludes the whole G05D mobile-robot world. This claim is about an arm, not a rover.
The substance is a path-planning method: given a start and goal configuration for a manipulator, compute a motion path that the controller can execute. The supporting G05B 2219/404xx codes — covering safety, collision, and motion-control specifics in programmable controllers — confirm the claim is aimed at the execution layer, where a planned path becomes joint commands, not at the high-level task layer.
For an actuation-beat analyst, the value of reading the classification is that it tells you what prior art the claim must clear. A manipulator path-planning claim competes against decades of industrial-robotics literature — RRT, PRM, potential fields — so the patentable delta is almost always in a specific computational step, not in the idea of planning a path. The breadth lives in whatever narrow improvement claim 1 recites; the title's generality is marketing, not scope.
UBTECH is a consumer-and-humanoid robotics player, and a manipulator path-planning patent fits the portfolio of a company building arms and humanoids rather than self-driving systems. Read alongside its other filings, this is portfolio-building in the B25J lane — the unglamorous control IP that any arm product needs and that competitors will eventually have to design around.
The caveat that always applies: a broad-sounding title ("motion path planning") almost never means a broad granted claim in a field this crowded. The B25J classification tells you the domain; only claim 1's recited steps tell you the fence. Pull it on PatentBear and read whether the independent claim ties the method to a specific cost function, sampling scheme, or collision check — that limitation is the actual asset.
Bottom line for the manipulation beat: this is narrow, execution-layer arm IP, correctly classified and modestly scoped. Worth tracking as a data point in UBTECH's B25J velocity, not as a blocking patent on robot path planning writ large.