We handle global trademark registration, international patent filing and overseas IP enforcement for cross-border sellers - from clearance search to dispute resolution, end to end.
Three core practices: trademarks, patents and overseas enforcement — searched, filed and defended end to end.
Coverage across China, North America, Europe, Japan, Korea, Southeast Asia and the Middle East - clearance search, filing, examination tracking and renewal handled end to end.
Invention, utility model and design patents in China and abroad. For cross-border products we prioritise US and EU design patents to block copycats and takedowns.
Platform complaints and appeals, patent non-infringement opinions, trademark and patent invalidation actions, TRO response and settlement negotiation.
Acceptance times and registration terms for the markets cross-border sellers file in most.
The four IP situations cross-border sellers run into most often — handled by our own team.
Amazon Brand Registry plus TEMU and SHEIN platform registration - certificates, categories and documents prepared in one pass so brand privileges open sooner.
咨询该场景 →Found resellers, look-alikes or image theft? We secure evidence, file platform complaints and get listings removed, keeping you updated throughout.
咨询该场景 →Hit by a complaint, takedown or fund freeze? We analyse the counterparty's rights, prepare appeals and defence materials and push for fast reinstatement.
咨询该场景 →US temporary restraining orders and frozen funds: we assess the plaintiff's rights, then litigate or negotiate settlement - stop losses first, terms transparent.
咨询该场景 →One consultant owns your case from search and filing to grant. Nothing is subcontracted, and you always know who is handling it.
A decade serving cross-border sellers, so we work with Amazon, TEMU and SHEIN complaint and appeal rules every day.
Filed with the office within 48 hours of confirmed materials, and the filing receipt is shared with you the same day.
Clearance search and risk assessment before we file, so refusal risk is known early and nothing is filed blind.
Itemised quotes with no hidden charges. Every cost, including official fees, is confirmed before you sign.
Renewal monitoring, annuity payment, platform complaints and TRO response handled for the whole life of the right.
Six standardised steps, each followed by a dedicated consultant.
One-to-one consultation, trademark search and patent triage
Tailored proposal, itemised fees, no hidden charges
Guidance on specimens and classes, prepared in one pass
Filed within 48 hours of confirmation, receipts shared
Progress tracked, official opinions answered on time
Certificates delivered; monitoring, renewal and enforcement
Our practical notes on trademark, patent and enforcement casework are published in Chinese. English briefings are available on request from your consultant.
Browse insights →Brand Registry on Amazon, TEMU and similar platforms requires a registered mark. Registration is also the legal basis for complaints, anti-counterfeit action and offline channel access.
The US follows first-to-use. Applications based on actual use need sales evidence bearing the mark; intent-to-use applications may file a statement of use after allowance. Our consultants guide the evidence and timing.
Invention protects technical solutions (1-3 years, substantive examination); utility model protects shape or structure (6-12 months, formality examination only); design protects appearance (3-8 months). Cross-border products usually prioritise designs plus target-country design patents.
An EU trademark takes effect in all 27 member states, suited to a Europe-wide strategy. A German trademark covers Germany only but costs less and examines faster. Many sellers combine both, based on product line and budget.
Secure evidence, assess the counterparty's rights (invalidation where useful), then choose platform channels or litigation. We handle complaints, appeals, cease-and-desist letters and TRO settlement.
In smooth cases the EU and UK run about 4-6 months and the US about 8-10 months, with Japan and Korea at 6-12 months. You get the filing receipt on the day of submission; actual timing depends on each office, and your consultant gives you a country-by-country schedule.
A company provides its business licence, an individual provides an ID or passport. Add the logo file, the classes and the goods or services list and we are ready to file. Powers of attorney and other forms come from us as templates and we complete them with you, so everything is prepared in one pass.
Trademark rights are territorial - you are protected where you have registered. You can file market by market, or use the Madrid System to designate several countries from one filing. We map the coverage to the platforms and countries you actually sell in.
A TRO is a temporary restraining order issued by a US court, usually alongside an infringement lawsuit; it freezes listings and funds. Act quickly: secure the evidence, test how stable the plaintiff rights are, then choose between defending, settling or exiting the category. The earlier we step in, the lower the cost.
No. Once we analyse the grounds we can file a refusal appeal, and many objections are overcome by amending the goods list or by argument. Our approach is to run the clearance search before filing so refusals are rarer, and when one does happen the appeal plan comes with it.
Guangzhou Yangtianxia Intellectual Property Service Co., Ltd. is headquartered in Guangzhou, with more than a decade of experience in cross-border intellectual property services.
We focus on global trademark registration, international patent filing and overseas enforcement for cross-border sellers, covering 200+ countries and regions with transparent fees and fully traceable progress.
Our workflow covers assessment, quotation, document preparation, filing within 48 hours, examination tracking, and post-grant monitoring and dispute response - every step handled by a dedicated consultant.
Send us your product and target markets — we will run a clearance search and risk assessment free of charge.
Trademark registration, patent filing and overseas enforcement - free assessment by a dedicated consultant, filed within 48 hours of confirmation.
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