The Firm
Intellectual Property Attorneys
Since 1923
Patents + Trademarks + Copyrights

Welcome to Lackenbach Siegel 

Our practice is devoted exclusively to intellectual property law, and has been since our formation more than 96 years ago.

Our practice areas include patents, trademarks, copyrights, advertising, Internet, domain name and computer law, advertising and related licensing and litigation.

Please consider the Lackenbach Advantage, our unique business model for providing efficient, high quality legal services at reasonable rates.

Lackenbach Siegel, LLP
Lackenbach Siegel Building

One Chase Road
Scarsdale, New York, 10583, 


Main:  914-723-4300

Fax:    914-723-4301


Read All About It...
Read Latest Newsletters, Interesting Articles, and Alerts
Online Now:
Not So Fast! 
Amazon Blasts Counterfeits in
2019 Newsletter: LS-TODAY!
Fast Track Trademark Protection 
ALSO Appears in the February 2019 Toybook Issue








On March 31, 2020 the US Trademark Office issued a Notice of Waiver of Trademark-Related Timing Deadlines under the Coronavirus Aid, Relief, and Economic Security Act (CARES Act) for some, but not all, trademark matters that have deadlines due between March 27, 2020 and April 30, 2020.  These deadlines have been extended for 30 days from the initial due date.  

The deadlines for the following US trademark matters at the US Trademark Office are extended for 30 days from their original due date:


For pending applications

Responses to Official Actions, including responses to final refusals, and appeals from final refusals to register.


Statements of Use or requests for Extensions of Time to file Statements of Use for applications in their Notice of Allowance periods.


Claims of foreign application priority bases for a new US application.


For registrations

Registration 6th-year maintenance Affidavits of Use or Excusable Non-Use.

Registration Renewal applications and Affidavits of Use or Excusable Non-Use.


Trademark Trial and Appeal Board

The only 30-day deadline extensions available for submissions to the TTAB are for filing a notice of opposition against a third party’s application or requesting an extension of time to file a notice of opposition against a third party’s application.


We do not have to request the 30-day extension for any of your deadlines that fall within the March 27 to April 30, 2020 time period.  These extensions have been granted automatically.  We are updating our April Due Date calendars to incorporate these 30-day extensions.


We can and are able to submit responses, Statements of Use, Extensions of Time to file Statements of Use and registration maintenance and renewal declarations and applications that are due during the month of April if you sent us appropriate instructions and do not want or need the extension.


The deadline extension program presently runs only to matters due between March 27 and April 30, but the Trademark Office’s notice indicates that it will “continue to evaluate the evolving situation” that the COVID-19 pandemic presents and how it affects the Trademark Office’s operations and applicants, registrants, and other interested parties.


We at Lackenbach are following the state of operations at the Trademark Office, and we are diligent in monitoring all deadlines for our clients.  We will notify you of any additional waivers or operations changes that the Trademark Office issues in the coming months.   

Please plan ahead and avoid urgent requests.










Our offices in Scarsdale New York are likely to be affected by the COVID-19 virus epidemic soon, as surrounding school systems and businesses are closing.  Our office is open, fully operational, but we are taking precautionary measures to maintain operations while guarding the safety of our attorneys and staff.  


We will be working remotely at times, and while we expect to handle matters,  business as usual, responding to urgent instructions may be uncharacteristically delayed.  We trust that you understand the unique and unprecedented challenges the unfortunate global virus is causing.  


Please be sure to instruct us well in advance of due dates and avoid urgent filing deadlines if at all possible.  


While all our usual office systems are in place, it is possible there may be temporary delays or disruptions in customary procedures and processing.  We politely solicit your understanding and patience during these unusual times and challenging circumstances.  


Please take all measures at your end to stay safe and protected.  We care about your wellbeing and hope for a global treatment for those affected by the virus soon.



Lackenbach Siegel, LLP 

Intellectual Property Law Since 1923 

Lackenbach Siegel Building 

One Chase Road 

Scarsdale, New York 10583 USA

Please plan ahead and avoid urgent requests.


As of February 15, 2020 the US Trademark Office will require all US trademark applicants and registrants to include an “owner e-mail address” as part of the prosecution record for every trademark.  This e-mail address must be one that is regularly reviewed by and accessible by the owner.  This can be a “dedicated” e-mail address for US Trademark Office correspondence, but it must be reviewable and accessible by the trademark owner. From February 15, 2020 onward, if we do not have a valid, working owner e-mail address for trademark applicants and registrants the Trademark Office will prevent us from using its mandatory electronic filing system for an application prosecution filing or registration maintenance or renewal submission without that e-mail address.  Please provide us with an owner e-mail address that meets these requirements as soon as possible.  This is especially important for applications and registrations that have imminent deadlines for submissions. Direct your questions about this mandatory requirement to Nancy Chapman ( and/or Howard Aronson ( at Lackenbach Siegel.

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