The filing trend analysis across all three temporal dimensions — priority dates, application dates, and publication dates — reveals a company in a pronounced and accelerating phase of intellectual property creation. The earliest priority date on record traces back to 2016, when Sun Mobility's initial IP framework was established with two foundational filings. A more substantive wave followed in 2018 with 15 priority filings — primarily covering battery compartment hardware, smart locking mechanisms, and electronic access control systems — establishing the physical and mechanical IP foundation upon which all subsequent innovation layers were built.

The portfolio remained relatively stable through 2019–2021, a period largely characterised by international prosecution, PCT national phase entries, and the conversion of early applications into granted patents across India and Singapore. The pivotal inflection point arrived in 2022, when priority filings surged to 25, followed by 27 in 2023, and an extraordinary 57 priority filings in 2024 alone — representing 43.8% of the entire portfolio created in a single calendar year. The corresponding publication bulge of 38 records in both 2024 and 2026 confirms that the R&D engine is operating at full capacity, with newly filed inventions moving rapidly through publication cycles. This aggressive filing posture is consistent with a company actively constructing a broad, defensible IP estate in preparation for market dominance and potential licensing programmes in the EV infrastructure domain.

The IPC and CPC classification distributions provide the clearest possible window into Sun Mobility's core technology DNA. In the IPC landscape, B60L-053/80 (contactless or inductive electric vehicle charging) commands the largest single share with 17 records, reflecting the company's deep investment in wireless charging interface technology — a strategically critical capability for seamless battery swap operations. This is closely followed by H02J-007/00 (circuit arrangements for charging secondary cells) with 14 records, and B60L-053/60 (conductive charging systems) with 7 records. Together, these three classifications alone account for over 29% of all classified patent records in the portfolio.

The secondary IPC clusters — including H01M-050/147 (battery housing and mounting), H04L-027/26 (OFDM digital communication protocols), and B60L-053/30 / B60L-053/302 (charging station management and communication protocols) — reveal a sophisticated, multi-layer R&D strategy in which battery hardware innovations are tightly coupled with advanced communications, data exchange, and interoperability standards. The CPC distribution mirrors this pattern, with B60L-053/80 again leading at 17 records, complemented by B60S-005/06 (vehicle service stations for EV battery swapping) at 5 records and H01M-050/256 (battery terminal and housing sealing) at 4. This cross-disciplinary IP architecture — spanning mechanical hardware, electrochemical systems, power electronics, and digital communication — is a hallmark of companies building platform-level IP moats around an entire technology ecosystem, rather than protecting isolated product features.

Sun Mobility's geographic filing distribution tells a strategically deliberate story about its commercial priorities and long-term IP protection objectives. India leads decisively with 60 patent records (46.2%), reflecting both the Indian Patent Office as the primary home jurisdiction and India as the company's largest operational market for electric two- and three-wheeler battery swap networks. This strong domestic anchoring ensures that Sun Mobility has enforceable first-mover IP protection across its primary revenue territory.

Equally significant is the substantial presence of 47 PCT (WO) international filings (36.2%) — a proportion that speaks to the company's commitment to broad international IP coverage. PCT filings provide a single, cost-effective pathway to protect inventions across 150+ member states, preserving the option to enter any national phase as commercial opportunities materialise. Targeted national entries in Singapore (7), the United Kingdom (3), Indonesia (3), Vietnam (2), Brazil (2), Colombia (2), Peru (2), and the Philippines (2) map directly onto Sun Mobility's active commercial expansion zones — primarily the high-growth EV markets of Southeast Asia and Latin America. The presence of GB filings may also indicate a strategic European market interest, as UK patents can serve as a bridgehead for EPO validation. With 91% of all records legally alive and only 12 lapsed filings — representing early-stage or low-strategic-value IP that has been intentionally allowed to lapse — the portfolio is actively maintained and commercially relevant across all key geographies.

The patent family size distribution reveals a structurally sophisticated IP portfolio designed for maximum territorial coverage on high-value inventions. The dominant cluster consists of 79 families with 2 members — typically comprising one Indian national application paired with one PCT (WO) international publication — forming the backbone of Sun Mobility's IP prosecution pipeline. This pattern reflects an efficient, cost-optimised filing strategy in which every core invention is simultaneously secured in the home market and protected under the international PCT framework, preserving the right to enter any national phase within the prescribed 30-month window.

At the high end of the distribution, 10 patent families with 12 members and 7 families with 10 members represent the portfolio's most strategically valued innovations — extensively prosecuted across India, Singapore, Vietnam, Brazil, Colombia, Peru, the Philippines, Indonesia, and the United Kingdom. These are the foundational technology families covering Sun Mobility's most commercially critical inventions: battery compartment mounting systems, wireless charging interfaces, battery terminal sealing structures, and electronic vehicle-side management systems. The technology domain overview reinforces this read: B60L – EV Charging & Propulsion dominates with 49 records (37.7%), followed by H01M – Battery Systems (24 records, 18.5%) and H02J – Power Management (14 records, 10.8%). Emerging clusters in G06F (Software & Computing), G01R (Electrical Measurement), H04L (Data Communications), and E05B (Access Control) confirm that Sun Mobility's innovation engine is progressively expanding beyond pure hardware IP into software-defined, data-driven, and security-layer intellectual property — a clear signal of a maturing platform company building a comprehensive, multi-layer IP fortress.