EMI Shielding for 5G Mobile Devices Patents: Leaders & Trends 2026
- Filings have flattened, not grown. Annual output peaked in 2019 at 9 records and sat at 5 by the 2022 midpoint, with no sign of a renewed filing wave heading into the most recent years.
- H05K dominates the claim space. 96 of 151 records sit in printed-circuit/assembly shielding (H05K), nearly double the semiconductor-package share (H01L, 59) — the packaging boundary is where most protection has been staked out.
- The US is the dominant filing venue. 81 of the tracked records were filed at the USPTO versus 14 at the EPO and 13 in China, meaning freedom-to-operate work outside the US relies on a much thinner public record.
What this landscape covers
EMI shielding for 5G mobile devices sits at the intersection of RF module packaging, conformal coating processes and antenna coexistence engineering. As 5G modules pack more radios into less board space, the shielding can and the sputtered conformal layer around it are no longer just noise suppression — they are load-bearing parts of the RF budget. This landscape tracks 151 patent families published between 2015 and mid-2026, filtered to documents that explicitly address shielding effectiveness, sputtered shields, shielding cans or conformal shielding in the context of antenna coexistence and 5G modules.
The dataset spans eight IPC subclasses, from the expected shielding and packaging classes (H05K, H01L) through to antenna design (H01Q) and digital transmission (H04L), reflecting that shielding decisions increasingly get made jointly with RF and software teams rather than by a mechanical engineer alone.
Filing trend and technology composition
Publication counts by year and by IPC subclass, drawn directly from the 151 tracked families. Recent years are always undercounted because publication lags filing by roughly 18 months.
A peak behind us, not ahead
Filings rose to 9 in 2019, then eased toward 5 by 2022 with no rebound visible in the years since — read the final one to two years as incomplete rather than as a genuine decline.
Packaging and semiconductor classes lead
H05K (96 records) and H01L (59) together account for the bulk of the corpus; H10W, H04B, H01Q, H10P, G06F and H04L each contribute a smaller, more specialised slice tied to antenna coexistence and digital signal handling.
Shares are the percentage of the 151 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on EMI Shielding for 5G Mobile Devices with Eureka
This page is one run against one query. Ask Eureka your own question about emi shielding for 5g mobile devices and every answer comes back with the patent numbers behind it.
Try EurekaThe patents other filings build on
Conformal shielding for a diversity receive module
Described are RF modules that include shielding for improved RF performance, built on a packaging substrate carrying a receiving system of amplifiers, filters, switching networks, impedance-matching and multiplexing components. The shield is a conductive layer within a conformal shielding structure covering the upper side and side walls of the module.Filed by Skywoks Solutions, published 2019-06-13.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20110304015A1 | Semiconductor package | 240 |
| 2 | US20110255850A1 | Electronic subassemblies for electronic devices | 113 |
| 3 | US5708833A | Antenna cap, antenna connectors and telephone line connectors for computer devices utilizing radio and modem … | 110 |
| 4 | US20090002972A1 | Backside seal for conformal shielding process | 82 |
| 5 | US20090000815A1 | Conformal shielding employing segment buildup | 78 |
| 6 | US20090002971A1 | Bottom side support structure for conformal shielding process | 76 |
| 7 | US5590346A | Antenna cap for computer device utilizing a radio card | 76 |
| 8 | US20090000816A1 | Conformal shielding process using flush structures | 71 |
| 9 | US20100319981A1 | System and method of forming isolated conformal shielding areas | 62 |
| 10 | US20090002970A1 | Conformal shielding process using process gases | 59 |
Citation counts are drawn from a searched corpus and skew toward older filings — they signal influence on later drafting, not current commercial relevance.
Each row carries its publication number; clicking a row searches Eureka by that number.
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Three patterns in the data matter more than the raw counts: where claim density sits, where citations concentrate, and where the filing venue mix creates blind spots.
Packaging-level shielding is the crowded ground
Printed-circuit and assembly-level shielding (H05K) carries nearly two-thirds of all records, with semiconductor-package shielding (H01L) a distant second at 59. New filings aimed squarely at the shielding can or sputtered-shield layer itself are entering dense prior art.
A handful of older filings anchor the field
The most-cited records — spanning semiconductor packaging, conformal shielding buildup and backside seal processes — were published years before the 5G-specific filings in this dataset and still frame how later claims are drafted around segment buildup and backside sealing.
Public record outside the US is thin
With only 14 EPO, 13 China and 12 Japan filings against 81 US filings, competitors operating in Asian or European supply chains should not assume the US record represents the full state of the art in their target markets.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to emi shielding for 5g mobile devices, with the prior art for and against each one.
Who is filing, and where the field is quiet
Recent-year momentum across the tracked assignees reads as flat: every leading filer shows zero records in the latest year, consistent with the broader publication lag rather than an actual pullback.
Skyworks-linked filings show the most internal co-authorship
The strongest co-assignee pairings in the dataset link Skyworks Solutions with named individual inventors, appearing twice each — a pattern typical of an in-house module team iterating on conformal shielding builds rather than joint ventures.
Momentum has stalled across the board
Huawei Device, Apple, Huawei Technologies, Broadcom and Qualcomm-adjacent filers all show zero publications in the most recent year — a sign of the publication lag more than of disengagement, given filings typically surface 18 months after they are made.
China-based filers are a minority but present
Newer entrants including materials-focused firms based in Shenzhen and Suzhou appear in the corpus alongside the established module makers, though China accounts for a much smaller share of filings than the US.
| Assignee | Recent year | YoY |
|---|---|---|
| RF Micro Devices, Inc. | 0 | — |
| Huawei Device Co., Ltd. | 0 | — |
| Apple Inc. | 0 | — |
| Skyworks Solutions, Inc. | 0 | — |
| Broadcom Inc. | 0 | — |
| Huawei Technologies Co., Ltd. | 0 | — |
| Qualcomm Incorporated | 0 | — |
| General Electric Company | 0 | — |
Where to take this
The landscape points to a mature packaging-level claim space and thinner coverage in adjacent branches — the next steps depend on whether you are clearing a filing or scouting an opening.
Check freedom-to-operate around the shielding can
With 96 records in H05K and citation chains running back to segment-buildup and backside-seal patents, any new shielding-can filing should be checked against that older core before drafting claims.
Explore the shielding can prior art in EurekaScope the antenna-coexistence gap
Antenna coexistence appears in the search criteria but IPC H01Q accounts for only 17 records, suggesting claims tying shielding design to coexistence tuning are less contested than core packaging claims.
Map antenna-coexistence claims in EurekaWatch venues outside the US
The 81/14/13/12 split across US, EPO, China and Japan means a filing cleared against the US record may still face exposure in China or Europe.
Run a multi-jurisdiction search in EurekaCommon questions on EMI shielding patents for 5G devices
This landscape tracks 151 patent families published between 2015 and mid-2026 that match shielding-effectiveness, conformal shielding and shielding-can terminology alongside 5G module and antenna-coexistence language. That figure counts families rather than raw document counts, which avoids inflating the total through continuations or multiple jurisdictional filings of the same invention. It is a filtered slice of the broader EMI shielding literature, not the entire field.
Based on the tracked data, filings peaked in 2019 at 9 records and had eased to 5 by the 2022 midpoint, with no rebound visible since. Because publication typically lags filing by around 18 months, the most recent one to two years in any such dataset will always look artificially low, so a flat or declining recent trend should be read cautiously rather than taken as proof the technology has stalled.
H05K, covering printed circuits and assemblies, accounts for 96 of the 151 tracked records and is the dominant class, followed by H01L semiconductor devices at 59. Smaller but relevant classes include H01Q for antennas and H04B for general transmission, reflecting that shielding decisions are increasingly made alongside RF and antenna design rather than in isolation. A filing that only touches H05K without considering H01L packaging interactions may miss adjacent prior art.
US20190181906A1, assigned to Skywoks Solutions, describes RF modules with a packaging substrate carrying a receiving system of amplifiers, filters, switching networks and multiplexers, shielded by a conductive layer within a conformal structure covering the module's upper side and side walls. It matters as a representative example of how conformal shielding claims are structured around the packaging substrate rather than the shield material alone. Anyone drafting around conformal shielding for a diversity-receive or multi-radio module should check claim scope against this filing specifically.
The data suggests thinner coverage in antenna-coexistence tuning tied specifically to shielding geometry, sputtered shield thickness optimisation, and backside seal process variants, all of which appear in the search criteria but carry lower record counts than the core H05K shielding-can claims. These branches sit adjacent to dense prior art rather than being entirely open, so a first claim there should be scoped narrowly around the specific process or tuning parameter rather than the shielding structure generally. Verifying against the most-cited backside-seal and segment-buildup patents before drafting is advisable.
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Disclaimer. This page is generated from Patsnap Eureka data drawn from a limited snapshot of global patent and scientific-literature records, and is provided for general information and reference only.
Patent data carries inherent limitations: recent filings (typically the most recent 18–24 months) are under-counted due to standard publication lag; counts may be reported at either a patent-family or a patent-record basis and are not always directly comparable; classification, applicant-name, and citation data may contain errors, duplicates, or omissions; and the underlying search query defines and constrains the scope shown. As a result, the analysis may be incomplete or inaccurate and may not reflect the full technology landscape.
Nothing on this page constitutes an exhaustive prior-art, novelty, freedom-to-operate, or validity search, nor does it constitute legal, financial, investment, or professional advice, and it should not be relied upon as such. Any patent, commercial, or strategic decision should be verified independently and reviewed with qualified patent, legal, and domain professionals. Patsnap makes no warranties, express or implied, as to the accuracy, completeness, or fitness for any particular purpose of the information presented.
Machine translation. Assignee and organisation names originally recorded in Chinese, Japanese or Korean have been rendered into English by an AI translation step so that the tables stay readable. These renderings are best-effort and may not match a company’s registered English name; the original name is what the underlying patent record carries, and it is what any Eureka query launched from this page uses.