The Datang Telecom Patent Portfolio offers a useful window into how a major Chinese state-owned telecommunications group manages its intellectual property over time. Across 229 total patent families, the active rate stands at 22.7%, covering both granted and pending cases. Of these, 44 families have been granted and 8 remain pending, giving a grant rate of 19.2%. A combined 177 families fall under lapsed, revoked, or expired status. These figures reflect prosecution and maintenance outcomes only, not a judgment on patent quality or enforceability.
Filing activity peaked in the period up to and including 2007, when the portfolio recorded 81 families, a number shaped partly by how early filings get grouped in this dataset. China dominates the geographic footprint, holding 96.1% of filings across a total of 9 jurisdictions tracked. The leading technology cluster is H04L, Digital Information Transmission, accounting for 62 families, underlining the company’s long-standing focus on core network transmission technology.
This report draws on structured patent filing data to assess how Datang Telecom has built and maintained its intellectual property position. Filing volume alone does not confirm commercial success or a lasting competitive edge in any given technology area. Readers evaluating specific families for licensing, litigation, or investment purposes should independently verify current legal status before relying on this analysis for decision-making.
About Datang Telecom
Company Profile: Datang Telecom Group is a Chinese state-owned telecommunications equipment group headquartered in Beijing, China. Datang Telecom Group was founded on September 21, 1998 by the China Academy of Telecommunications Technology (CATT) and manufactures telecommunications equipment, and it has been the trading name of the China Academy of Telecommunications Technology since September 1998. It is best known for its leading role in developing the Chinese TD-SCDMA 3G mobile telecommunications standard through its subsidiary DT Mobile, formerly known as Datang Mobile. Datang Telecom Group sells equipment to Chinese mobile network operators and also provides military communications infrastructure to the People’s Liberation Army. Its listed subsidiary, Datang Telecom Technology, trades on the Shanghai Stock Exchange. Since 2018 its ultimate parent has been the China Information and Communication Technologies Group, a central state-owned enterprise supervised by SASAC. The business now centres on security chips and special-purpose communications after restructuring.
How Healthy is Datang Telecom Patent Portfolio?
Patent portfolio health depends heavily on legal status distribution, and here the picture is mixed. Of the 229 families tracked, only 19.2% carry granted status, while 3.5% remain pending examination. The remainder splits across 34.9% lapsed, 30.1% revoked, and 12.2% expired, as shown in the composition chart. Together these three categories account for the bulk of the portfolio’s historical filings.
This status mix suggests many older filings were allowed to lapse or were revoked rather than actively maintained through their full term. By patent type, 84.3% of families are standard patents, with the remaining 15.7% filed as utility models, a common strategy in China for faster, lower-cost protection. The low active rate of 22.7% signals that Datang Telecom’s current enforceable footprint is considerably smaller than its historical filing volume. For a company with this filing history, the gap between total families and active protection points to a portfolio shaped more by past research cycles than ongoing maintenance investment.
How Has the Datang Telecom Patent Portfolio Evolved Over Time?
Patent filing trends for Datang Telecom show a clear early concentration, with 81 families filed in the period up to 2007. Activity then settled into a lower, uneven pattern through the 2010s, with notable upticks in 2010 (17 families) and 2016 (18 families). The filing-trend chart in this section shows this pattern of peaks separated by quieter years rather than steady growth.
Filings in 2021 reached 14 families, a relative high point for the decade, before tapering sharply. The most recent years, 2022 through 2025, show counts of 4, 2, 3, and 4 respectively, with a latest_year_change_pct of -100.0% reflecting a drop to zero by 2026. This decline should be read cautiously, since publication lag typically delays visibility of filings from the most recent one to two years. The underlying trend suggests reduced overall filing intensity since the mid-2010s peak, consistent with the company’s reported restructuring toward security chips and special-purpose communications.
Where Does the Datang Telecom Patent Portfolio Prioritize Patent Protection?
Patent geography for Datang Telecom is overwhelmingly domestic. China accounts for 96.1% of all filings, reflecting the company’s role as a state-owned equipment supplier serving Chinese network operators. The United States follows at a distant 4.4%, with WIPO PCT filings at 1.7%, as the geographic chart in this section illustrates.
Beyond these, filings trail into single-digit counts across Australia, Austria, Germany, EP Patents, Japan, and South Korea, each holding 0.4% of the total. In absolute terms, the portfolio spans 9 jurisdictions, a relatively narrow international footprint for a company of this scale. This concentration pattern indicates that Datang Telecom’s intellectual property strategy centres on protecting its home market position rather than pursuing broad international enforcement rights. For stakeholders assessing competitive exposure outside China, this narrow geographic spread limits the portfolio’s relevance to cross-border disputes or licensing opportunities.
Where is the Datang Telecom Patent Portfolio Building Protection Across Key Technologies?
IPC analysis of the Datang Telecom Patent Portfolio reveals a strong tilt toward core telecommunications technology. H04L, Digital Information Transmission leads with 62 families, representing 23.0% of classified filings. H04W, Wireless Communication Networks follows with 42 families (15.6%), and H04M, Telephonic Communication holds 34 families (12.6%), as the technology chart in this section demonstrates.
Supporting categories include G06F, Digital Data Processing at 31 families (11.5%) and H04B, Signal Transmission at 23 families (8.5%). Smaller clusters appear in H04Q Selecting, G06Q data processing for administrative purposes, H04J Multiplex Communication, G05B Control Systems, and G06K Recognition and Presentation of Data. This distribution confirms that transmission and wireless networking technologies remain the backbone of Datang Telecom’s filing activity. The presence of data processing and administrative computing classes also points to some diversification beyond pure network infrastructure into adjacent digital systems.
How Has the Datang Telecom Patent Portfolio Evolved Across Filing Geographies?
The year-by-jurisdiction heatmap confirms that China has consistently dominated Datang Telecom’s filing activity across every tracked year. From 2003 through 2021, China recorded filings in every sampled year, ranging from 10 to 19 families annually, with 2016 marking a high point at 19. Other jurisdictions show almost no activity across this same period.
The United States, WIPO PCT, and remaining jurisdictions register zero or negligible counts in nearly all years shown in the matrix, with one small exception, two WIPO PCT filings in 2004. This pattern reinforces that Datang Telecom’s international filing behaviour has stayed minimal and sporadic rather than building toward a sustained multi-country strategy. The heatmap shows no evidence of a deliberate phase of international expansion at any point in the tracked timeline. For a company with substantial domestic filing volume, this consistent absence abroad suggests international patent protection has never been a core priority.
Consultant’s Perspective on Datang Telecom Patent Portfolio
The Datang Telecom Patent Portfolio tells a story of a domestically focused, state-linked enterprise whose intellectual property strategy mirrors its business mandate. Heavy concentration in China, at 96.1% of filings, aligns with its role supplying Chinese network operators and defence communications infrastructure. The technology mix, led by digital transmission and wireless networking, matches its historical TD-SCDMA legacy and ongoing telecommunications equipment business.
What stands out is the gap between historical filing volume and current active protection. With only 22.7% of families active and 19.2% granted, much of the portfolio’s earlier intellectual property has lapsed or been revoked. Combined with a sharp filing slowdown after 2016, this suggests the company’s patenting emphasis has shifted, likely toward its newer security chip and special-purpose communications focus following its 2018 restructuring under China Information and Communication Technologies Group.
For competitors or partners assessing this portfolio, the practical takeaway is narrow but clear. Datang Telecom’s enforceable patent rights are concentrated, modest in count, and almost entirely domestic. Any due diligence exercise should prioritise verifying current status of the 44 granted families rather than relying on historical filing totals alone.
Explore Deeper Insights with Expertlancing Research
Understanding a patent portfolio requires more than counting filings, it demands context on legal status, technology direction, and geographic intent. Expertlancing Research helps organisations translate raw patent data into decisions that matter, whether for competitive benchmarking, licensing due diligence, or technology scouting. If this analysis of Datang Telecom raises questions specific to your business, our team can build a tailored assessment. Reach out to Expertlancing Research to commission a deeper, customised patent intelligence study aligned to your strategic questions.